Research Pegie Cool

Abstract

Catalysis is a key interdisciplinary technology in the chemical industry, and certainly one of the scientific disciplines with the largest societal impact. The research mission of the CASCH consortium is to contribute to sustainable development by addressing the challenges of reducing CO2 emissions, overcoming the dependence on fossil carbon feedstock and natural resource scarcity through development of new catalytic methods. The consortium spans a multidisciplinary expertise to develop and understand catalysis for challenging transformations and aims to develop more sustainable organic chemistry, mainly from prevalent but unreactive functional groups. As resources for making organic molecules renewable building blocks will be a focus area, but also petrochemicals will be studied. Complementary expertise on the development of new catalysts (synthesis and characterization) is brought together with organic synthesis know-how in one Centre of Excellence. The focus will be on the replacement or minimization of the use of critical raw materials by replacing noble metals by more abundant transition metals as active catalytic elements. The types of catalysis to be explored comprise the two major classes, i.e. heterogeneous and homogeneous catalysis. Besides thermal catalysis also recent emerging activation techniques such as photocatalysis and electrocatalysis are developed. Photoredox and electrocatalysis have come to the forefront in organic chemistry as a revival of radical chemistry, fully exploiting renewable energy for the activation of small molecules. Innovative heterogeneous photocatalysts have the advantage of being easily recyclable and thus allowing continuous production which the typically used homogeneous catalyst do not (easily) allow. Electrosynthesis is an ultimate method for performing redox chemistry: oxidation and reduction requires no extra reagents, only electrons, hence the generated waste is greatly reduced. Electrocatalytic reactions require new electrode materials for both direct and indirect (via mediators) electrochemical routes which are developed by the consortium. A particular area of attention is the development of a new type of heterogeneous catalysts, i.e single atom catalysts (SACs), combining the advantages of heterogeneous (recyclability, robustness, cost, activity and productivity) and homogeneous (product versatility, tunability of the geometry and electronic properties of the active metal, reactants complexity) catalysis.

Researcher(s)

• Promoter: Maes Bert
• Co-promoter: Breugelmans Tom
• Co-promoter: Cambré Sofie
• Co-promoter: Cool Pegie
• Co-promoter: Herrebout Wouter
• Co-promoter: Van Doorslaer Sabine

Research team(s)

• Organic synthesis (ORSY)

Project type(s)

• Research Project

Abstract

Lithium has risen as a critical raw material in many technological advancements, such as lithium-ion batteries. Nowadays, Li-recovery focusses on brine extraction via direct Li extraction (DLE), owing to its cost-effectiveness and environmental friendliness. The DLE efficiency is strongly dependent on the type of Li-selective adsorbent. Layered double hydroxides (LDHs) are most favored for industrial Li extraction due to their low costs, ease of fabrication and regeneration under neutral media. However, further developments are needed to increase the adsorption capacity and to increase the LDHs stability over multicycle use for prolonged operation. In this project, these challenges are tackled by smart engineering of LiAl-LDH at the atomic level (structure tuning) and at the macro level (3D shaping). We aim to achieve the best combination of Li adsorption features in terms of superior capacity, selectivity and long term stability. This will be done by engineering of the LDHs atomic structure via fine tuning of both layer and interlayer sites for precise anchoring of Li+ during DLE to prevent their deactivation. Further, to enable their continuous dynamic operation, the engineered LiAl-LDHs powders will be 3D-shaped with tuned surface and internal porosity to overcome diffusion limitations. The materials' efficiency for Li extraction will be evaluated in dynamic flow-through conditions.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Carbon Capture and Utilization (CCU) combines a series of technologies to address the problem of excessive carbon dioxide (CO2) levels in the atmosphere, by capturing and converting CO2 into valuable products. One technology is photocatalysis, in which freely available solar photons are converted into an electrochemical driving force using semiconducting catalysts. The solar light harvesting efficiency can be improved through the modification of the catalytic surface using plasmonic nanostructures, but these comprise typically of expensive noble metals. On the other hand, plasma catalysis utilizes a reactive chemical cocktail driven by electrical energy in combination with a catalyst. This emerging technology excels in energy efficiency and conversion, currently undergoing upscale in a spin-off. I will combine the best of both technologies in this PhD project, by researching plasma-photocatalysis. The project emphasizes the use of inexpensive, earth-abundant elements for nanostructure fabrication, employing core-shell and Janus-type heterojunctions to enhance plasmonic efficiency. Novel porous supports with increased surface basicity will contribute to improving CO2 sorption and conversion selectivity. The ultimate goal is to surpass current standards, achieving over 50% conversion and 95% selectivity to CO. A working lab-scale plasma-photocatalysis reactor will be constructed, providing groundbreaking insights for the plasmon, plasma, and photocatalysis communities.

Researcher(s)

• Promoter: Verbruggen Sammy
• Co-promoter: Bogaerts Annemie
• Co-promoter: Cool Pegie
• Fellow: Vantomme Christine

Research team(s)

• Antwerp engineering, PhotoElectroChemistry & Sensing (A-PECS)

Project type(s)

• Research Project

Abstract

As a society, we currently face two major challenges: securing our future energy supply by transferring from fossil fuels to sustainable energy sources and reducing emissions of the greenhouse gas CO2. Only in this way can we achieve the objectives of the Paris climate agreement; limiting global warming to a maximum of 1.5°C in the 21st century and achieving net zero CO2 emissions by 2050. The FOTON project addresses both challenges. In the INTERREG project FOTON, 9 project partners have the ambition to develop high-tech systems and materials for sunlight-driven sustainable processes that contribute to a climate-neutral industry. The direct use of sunlight as an energy source for chemical processes has a number of advantages compared to the conventional use of sustainably generated electricity. First, the high energy efficiency when using sunlight directly: there is no energy loss when converting sunlight into electricity, or less energy loss if the electricity is generated in the chemical reactor itself. Transport of electricity is not necessary and direct use is made of sunlight for the local production of green hydrogen and methanol. This decentralized production prevents high costs associated with infrastructure. Three pilot demonstrators show that sunlight can be used as a sustainable energy source for the production of green methanol and green hydrogen in a technologically efficient, energy-efficient and financially feasible way. The research within FOTON forms the basis for the future translation into an industrial process and offers commercial opportunities for manufacturers of materials and equipment and chemical companies in the region.

Researcher(s)

• Promoter: Verbruggen Sammy
• Co-promoter: Cool Pegie

Research team(s)

• Antwerp engineering, PhotoElectroChemistry & Sensing (A-PECS)

Project type(s)

• Research Project

Abstract

The reverse water-gas shift rWGS reaction can effectively convert CO2 into CO, a crucial building block for the chemical industry. While this endothermic reaction is typically performed at high temperatures, photocatalysis is presented as a low-temperature alternative. PICaSSo will focus on plasmon catalysis: Through localized surface plasma resonance (LSPR), a collective oscillation of conduction electrons at the surface of metal nanoparticles (NP), can increase yield and improve local control of chemical reactions. NPs with LSPR can give rise to three beneficial effects: Near-field reinforcement, excitation of load carriers and local heat generation. To date, it is not known which of these are decisive, to what extent they contribute, and how the composition of the catalyst and nanotechnology can lead to a more effective rWGS reaction. Our goal is to identify the decisive contribution to plasmon-induced catalytic rWGS reaction by specially designed plasmonic POIs and then quantify them via a unique reactor with integrated sensors that measure reaction temperature locally. The scientific findings thus obtained will lead to design rules to develop new generations of catalysts with improved performance, increased durability, and cost-effectiveness by using more widely available metals and optimized plastic metal carrier interactions.

Researcher(s)

• Promoter: Verbruggen Sammy
• Co-promoter: Cool Pegie

Research team(s)

• Antwerp engineering, PhotoElectroChemistry & Sensing (A-PECS)

Project type(s)

• Research Project

Abstract

Direct decomposition is an excellent approach to reduce NOx exhaust gases, decreasing emissions in industry and providing a positive impact on climate change abatement. Nitrous oxide (N2O), also known as laughing gas, is characterized by a Global Warming Potential (GWP) 273 times that of CO2 over a 100 year's period, which clearly illustrates its impact on climate change. Moreover, problems such as premature death and financial impact on society clearly indicate the need for a reduction in its emissions. Using direct decomposition, the use of additional chemicals such as urea or ammonia is avoided during the decomposition of NOx to N2 and oxygen. Direct decomposition is an excellent option to achieve the abatement of NOx, but the following challenges should be solved before the catalysts are interesting for industrial settings: avoiding by-products, a low (hydro)thermal stability and poisoning by other gas components. Consequently, this project focuses on the development of innovative catalysts through an iterative synthesis-properties-performance development.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera
• Co-promoter: Verbruggen Sammy

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Through femtosecond pulsed laser micromachining a wide variety of materials such as ceramics (e.g. glass), hard metals (e.g. Hastelloy), and polymers can be processed with microscale resolution, offering innovation and beyond state-of-the-art research opportunities. To name a few, the planned research infrastructure would allow to tune the catalytic properties of surfaces, to enhance flow distribution, heat transfer and mass transfer in chemical reactors, to increase detection limit of photoelectrochemical sensors, to facilitate flow chemistry, to tailor-make EPR and TEM measurement cells, and to allow machine learning for hybrid additive manufacturing. Currently, the University of Antwerp lacks the necessary research infrastructure capable of processing such materials and surfaces with microscale precision. Access to femtosecond pulsed laser micromachining would yield enormous impact on ongoing and planned research both for the thirteen involved professors and ten research groups as for industry, essential to conduct research at the highest international level.

Researcher(s)

• Promoter: Breugelmans Tom
• Co-promoter: Bogaerts Annemie
• Co-promoter: Cool Pegie
• Co-promoter: De Wael Karolien
• Co-promoter: Maes Bert
• Co-promoter: Meynen Vera
• Co-promoter: Perreault Patrice
• Co-promoter: Van Doorslaer Sabine
• Co-promoter: Vanlanduit Steve
• Co-promoter: Verbeeck Johan
• Co-promoter: Verbruggen Sammy
• Co-promoter: Verwulgen Stijn
• Co-promoter: Watts Regan

Research team(s)

• Applied Electrochemistry & Catalysis (ELCAT)

Project type(s)

• Research Project

Abstract

The negative impact of CO2 on climate change makes the decrease of anthropogenic CO2 emissions one of the biggest scientific challenges our current generation faces. One possible solution is the direct photo- or electrochemical conversion of CO2 to highly value-added products such as methanol, using merely H2O as proton source and renewable electricity as driving force. However, in the current state-of-the-art these processes are not productive or not selective enough. In this respect, photo-electrochemistry emerges as a highly promising technique as it combines the advantages of photochemistry with those of electrochemistry. Electrochemistry allows to attain high conversion rates as an external driving force is applied. Downside is the low selectivity. Photochemistry is capable of achieving a high selectivity but at the expense of a low conversion rate. Photo-electrochemistry combines the best of both worlds. Whereas this combined strategy has proven itself in the production of hydrogen gas, no catalysts exist to this date that can efficiently convert CO2 into methanol. The goal of this project is to develop active, selective and stable photo-electrocatalytic materials through a fundamental understanding of their reaction mechanism and the material properties driving a successful and selective CO2 conversion.

Researcher(s)

• Promoter: Breugelmans Tom
• Co-promoter: Cool Pegie

Research team(s)

• Applied Electrochemistry & Catalysis (ELCAT)

Project type(s)

• Research Project

Abstract

To sustain our carbon-based standard of living, it is becoming increasingly clear that CCU will play a key role in delivering materials, food, and clean energy storage services. This will require informed policy, education of industry partners, opportunities for researchers to collaborate, and academic symbiosis. We have an impressive level of expertise in Flanders in both biological and chemical (catalytic) conversion of CO2 (which is rather unique). Therefore, we create this Scientific Research Network "Catalysis for CCU" composed of researchers with diverse but complementary backgrounds in the CCU field. Our goal is to build a CCU network relevant to the Flemish/European industrial landscape, focused on sharing best practices and knowledge; stimulating collaboration; exposing young researchers; creating a community; being a go-to place for expertise; and sharing resources that individual researchers and knowledge institutes lack.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The objective of the project is to combine photo- and electrochemistry into a photo-electrocatalytic approach to convert CO2 into methanol. The approach herein lies on developing more active and stable photo-electrocatalytic materials compared to the state-of-the-art and to improve productivity of the photo-electrochemical reactor, targeting an energy efficiency of 30% with an outlook for further upscaling.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This IOF consortium connects chemists, engineers, economic and environmental oriented researchers in an integrated team to maximize impact in key enabling sustainable chemical technologies, materials and reactors that are able to play a crucial role in a sustainable chemistry and economic transition to a circular, resource efficient and carbon neutral economy (part of the 2030 and 2050 goals in which Europe aims to lead). Innovative materials, renewable chemical feedstocks, new/alternative reactors, technologies and production methods are essential and central elements to achieve this goal. Due to their mutual interplay, a multidisciplinary, concerted effort is crucial to be successful. Furthermore, early on prediction and identification of strengths, opportunities, weaknesses and threats in life cycles, techno-economics and sustainability are key to allow sustainability by design and create effective knowledge-based decision-making and focus. The consortium focuses on sustainable chemical production through efficient and alternative energy use connected to circularity, new chemical pathways, technologies, reactors and materials, that allow the use of alternative feedstock and energy supply. These core technical aspects are supported by expertise in simulation, techno-economic and environmental impact assessment and uncertainty identification to accelerate technological development via knowledge-based design and early stage identified key research, needed for accelerated growth and maximum impact on sustainability. To achieve these goals, the consortium members are grouped in 4 interconnected valorisation programs focusing on key performance elements that thrive the chemical industry and technology: 1) renewable building blocks; 2) sustainable materials and materials for sustainable processes; 3) sustainable processes, efficiently using alternative renewable energy sources and/or circular chemical building blocks; 4) innovative reactors for sustainable processes. In addition, cross-cutting integrated enablers are present, providing expertise and essential support to the 4 valorisation programs through simulation, techno-economic and environmental impact assessment and uncertainty analysis.

Researcher(s)

• Promoter: Meynen Vera
• Co-promoter: Billen Pieter
• Co-promoter: Bogaerts Annemie
• Co-promoter: Breugelmans Tom
• Co-promoter: Compernolle Tine
• Co-promoter: Cool Pegie
• Co-promoter: Das Shoubhik
• Co-promoter: Lenaerts Silvia
• Co-promoter: Maes Bert
• Co-promoter: Neyts Erik
• Co-promoter: Perreault Patrice
• Co-promoter: Vande Velde Christophe
• Co-promoter: Vande Velde Christophe
• Co-promoter: Van Passel Steven
• Co-promoter: Verbruggen Sammy
• Fellow: Meyer Nathalie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Catalysis is a key technology to achieve more efficient and greener organic synthesis. Complementary expertise on the development of new (homogenous and heterogeneous) catalysts (redox, photo and electrocatalysis) will be brought together with organic synthesis know-how in one center. Through collaboration of 5 research teams spanning two different faculties of the University of Antwerp a unique basis for innovative research, tackling challenging transformations in organic chemistry, is created. Cleavage and functionalization of strong bonds (carbon-nitrogen, carbon-oxygen, carbon-hydrogen and carbon-carbon bonds) in (small) organic molecules will be the target of the research activities of the consortium. The substrates will include petrochemical, biorenewable or waste compounds (e.g. CO2). The consortium combines advanced spectroscopy (including UV-vis, (in-situ) IR, multi-frequency EPR and NMR, circularly polarized and conventional Raman), sorption and quantum-chemical and molecular modeling techniques which will allow for fundamental insight in the active site of the catalyst and the reaction mechanism, providing a tool for rational catalyst/reaction development. Through shaping of the novel catalysts (e.g. indirect 3D printing) and evaluation in flow, effects of mass transport and sorption are evaluated revealing their industrial potential.

Researcher(s)

• Promoter: Maes Bert
• Co-promoter: Breugelmans Tom
• Co-promoter: Cool Pegie
• Co-promoter: Herrebout Wouter
• Co-promoter: Meynen Vera
• Co-promoter: Van Doorslaer Sabine

Research team(s)

• Organic synthesis (ORSY)

Project type(s)

• Research Project

Abstract

This project concerns the support for maintenance of scientific equipment within the research group LADCA. More specifically it concerns sorption apparatus Autosorb-iQ-C with combined volumetric and dynamic sorption, for characterization of porosity of nanoporous materials and their specific surface interactions with probe molecules.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The ARCLATH-2 project aims to overcome current drawbacks in hydrogen transportation and storage by developing a radically new transportation and storage concept based on clathrates. After a year of research, ARCLATH-1 already provided a proof of concept that shows hydrogen can indeed be encapsulated in clathrates under technically and economically relevant conditions, in terms of both pressure and temperature. A follow-up project ARCLATH-2 has now been initiated to maximise the hydrogen storage capacity of the clathrates under similar pressure and temperature conditions. At the same time, ARCLATH-2 will define a practical process of reversible hydrogen storage and delivery based on pressure swing cycling at lab-scale.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Bals Sara
• Co-promoter: Lenaerts Silvia
• Co-promoter: Perreault Patrice
• Co-promoter: Verbruggen Sammy

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In today's world where climate change is a hot topic, burning finite fossil fuels, which contributes to global warming through the production of CO2, still accounts for 85% of the primary energy production. Therefore, the scientific community focusses on the quest of finding cleaner alternative energy sources. A promising alternative is H2. At present, over 95% of all H2 is produced by steam reforming of methane, which has the disadvantage of producing CO as by-product. This causes detrimental effects on several catalysts (f.e. catalysts used in fuel cells or in the ammonia synthesis). Therefore, purification of H2-rich gas streams is required and the most effective approach can be found in the preferential oxidation of CO (CO-PROX). Up to date, many catalysts have been utilized for CO-PROX (mainly noble metal based), however only a few have shown potential for future application. In this project the aim is to provide the next step towards critical raw material-free supported catalysts for CO-PROX. This goal will be pursued by synthesizing innovative mono-/bimetallic Cu-based supported catalysts with ultimate porosity and stability, and excellent catalytically active surface sites dispersion. To contribute to the ultimate goal of sustainability, aqueous based methods will be utilized for the synthesis of the catalysts. Furthermore, innovation is brought to the catalysts by 3D-shaping (collaboration with VITO) and advanced catalytic testing (collaboration with UNIPD, Italy).

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Van Hoey Wouter

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

High resolution Raman imaging is a versatile imaging technique that generates detailed maps of the chemical composition of technical as well as biological samples. The equipment with given specifications is not yet available at UAntwerp, and will crucially complement the high-end chemical imaging techniques (XRF, XRD, IR, SEM-EDX-WDX, LA-ICP-MS) that are already available at UAntwerp for material characterization. High resolution Raman imaging will expose, with high resolution, the final details (structural fingerprint) of the material of interest. In first instance, we aim to boost the following research lines: electrochemistry, photocatalysis, marine microbiology, environmental analysis and cultural heritage. The Raman microscope should be as versatile as possible, to support potential future technological enhancements.

Researcher(s)

• Promoter: De Wael Karolien
• Co-promoter: Caen Joost
• Co-promoter: Cool Pegie
• Co-promoter: Janssens Koen
• Co-promoter: Meysman Filip
• Co-promoter: Verbruggen Sammy

Research team(s)

Project type(s)

• Research Project

Abstract

The proposal concerns versatile instrumentation for determining crystallinity, unit cell size and structure of organic, metal-organic and inorganic materials. Several groups at UAntwerp have a pressing need for fast, reliable, X-ray diffraction data, at low angles to determine large unit cells, and preferably in 2D to determine sample homogeneity. The envisaged machine has a Cu K alpha source, horizontal sample platform (Bragg-Brentano geometry), capability for measuring down to low angles (theta = 0.5°), and a fast and sensitive 2D solid state area detector. It will be used for materials research and characterization in inorganic porous materials (zeolites, templated silicas and titanias), metal organic materials (crystalline metal-organic frameworks), organic materials (fatty acids, PUR building blocks) and identification and characterisation of pigments for study and conservation of old masters' paintings. In addition, through the use of the PDF (probability density punction), the machine can generate experimental information through x-ray scatterineg on average short-range order in non-crystalline materials such as glasses and amorphous powders.

Researcher(s)

• Promoter: Vande Velde Christophe
• Co-promoter: Billen Pieter
• Co-promoter: Cool Pegie
• Co-promoter: Kiekens Filip

Research team(s)

• Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS)

Project type(s)

• Research Project

Abstract

The aim of this project is to study, explore and develop various (catalytic) technologies for the production of CO as platform chemical via conversion of CO2. A technology assessment will subsequently be carried out to evaluate the potential of each technology, pinpointing promising strategies for further development and upscaling. Concrete objectives and criteria The efficiency/productivity of existing homogeneous catalytic systems for CO2 reduction to CO will be mapped out and evaluated to identify the most promising systems to achieve this reduction and to explore ways to improve its larger scale viability through detailed catalyst modification studies. The focus will be on cobalt and nickel systems containing N-heterocyclic carbene (NHC) species as ligands. The goal of the heterogeneous catalytic conversion of CO2 to CO is to assess the potential of the oxidative propane dehydrogenation (OPD) reaction with CO2 as a soft oxidant. The main purpose here is to focus on and maximize CO2 reduction and CO formation via novel catalyst synthesis, surface engineering and investigation of catalyst support. In the field of electrocatalytic conversion of CO2 to CO we aim to (1) develop metal-based electrodes (electrocatalysts integrated in gas diffusion electrodes) exhibiting enhanced stability, (2) to investigate a novel type of metal-free electrocatalyst that can tackle the current challenges witnessed in N-doped carbons and (3) to demonstrate the continuous production of CO from CO2 by the development of a prototype lab scale reactor including the best-performing electrocatalysts developed in this project Another goal of this project is providing a proof-of-concept for plasmonic enhanced CO2 conversion into CO in an energy-lean process involving only solar light at ambient pressure as energy input i.e. without external heating. The objective of the plasma catalytic route for CO production is to enhance the conversion and energy efficiency of CO2 conversion in different plasma reactor types, with major focus on Gliding Arc plasma and Nanosecond pulsed discharges (NPD) plasma reactors. The project also takes up the challenge to activate CO2 and bio-CH4 and turn them into CO by combining chemical looping processes, into which catalysis is integrated, mediated by multifunctional materials (combine different functionalities into one smartly engineered material) and/or spatial organization of materials in dynamically operated packed-bed reactors.

Researcher(s)

• Promoter: Verbruggen Sammy
• Co-promoter: Cool Pegie
• Co-promoter: Lenaerts Silvia

Research team(s)

Project website

Project type(s)

• Research Project

Abstract

This short and intensive 18-month project is aimed at demonstrating the potential of a radically new concept of hydrogen storage and transportation. The aim is to conceptually demonstrate the feasibility of hydrogen storage in clathrate hydrates, under technically and economically relevant conditions of temperature and pressure. The central research hypothesis is that confinement in nanoporous materials can be used to stabilise hydrogen clathrate hydrates, catalysing their formation to an extent that a new technology for hydrogen storage can be envisioned. Targeted hydrogen storage capacities exceed 5 wt.% and 30 g/L at temperatures above 2 °C and pressures below 100 bar. This exceeds the performance of any of the current hydrogen storage technologies.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Everybody today has heard about the increasing need of having cheap, environmentally sustainable and green processes. The world is full of these high-sounding and fancy terms, but how to achieve them in practice? There are several ways to improve a chemical process, but most often studies are based on catalysts: the "accelerators" of chemical reactions. Catalysts are expensive, suffer from low stability and are difficult to separate/reuse, but their role is vital for pharmaceutical, agro and fine chemical industries. The immobilization of the catalysts on a support can solve all the mentioned problems. We propose a scaffold which has never been used before: Metal Organic Frameworks (MOFs). MOFs are networks made by ion metals and rigid linkers. Under appropriate conditions these two parts can assemble a porous material on which we can immobilize the catalysts, making possible their recovery/reuse at the end of the process. The advantages of our scaffolds are immense: uniform, reproducible and controllable manufacture and the possibility to completely engineer the linkers. As a consequence, we can control the whole network structure: we can personalize it, giving new properties to the walls, and tuning the pore size. In other terms: modular haute couture, for the need of the mentioned chemical industries. If you were an industrial stakeholder, wouldn't this sound great to you?

Researcher(s)

• Promoter: Vande Velde Christophe
• Co-promoter: Cool Pegie
• Fellow: Fucci Rosa

Research team(s)

• Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS)

Project type(s)

• Research Project

Abstract

Molecular hydrogen (H2) is an indispensable reactant in modern chemistry, used in many industrial processes for both commodity and fine chemicals synthesis. Unfortunately, the most widely spread production method of hydrogen (reforming of methane) is unsustainable due to the generation of carbon dioxide and moreover on a longer term not guaranteed because of the depletion of fossil feedstocks. Fortunately, many alternative solutions for (large scale) sustainable hydrogen production are technically far advanced, such as electrolysis. However, due to the issues related to the safe handling and storage of hydrogen, its use immediately after production (in situ generation and consumption) is the ideal approach for reactions using hydrogen as a reductant in the chemical industry. This ideally requires production and consumption of hydrogen in the same reaction vessel based on donor molecules which do not produce organic by-products. Thermochemical in situ water splitting combined with subsequent reduction reactions consuming hydrogen is a very attractive approach due to the practically unlimited availability of water and its very benign profile as a solvent (low cost, no environmental impact, non-toxic, non-flammable). However current (catalytic) methods for thermochemical water splitting are performed in gas phase and require very high temperatures (above 600 °C) and therefore are both extremely energy-demanding and incompatible with most organic molecules (these are not stable at these temperatures). The major objective of this project is therefore to develop thermochemical water splitting combined with immediate consumption of the generated hydrogen in a subsequent reduction (hydrogenation/hydrogenolysis) reaction at lower temperatures (200-300 °C) in liquid high temperature and pressure water (HTPW). At these temperatures, the properties of water remarkably change, providing much better solubility of organic substrates – often an issue for application of water in organic synthesis. Development of new synthetic methods for sustainable reduction reactions (nitro group reduction, hydrodeamination, hydrodehydroxylation) of both petrochemical and renewable feedstocks in HTPW are scheduled in which hydrogen gas will be generated in situ and consumed in the same reaction vessel. Several thermochemical systems for hydrogen gas generation will be evaluated, making use of both homogeneous and heterogeneous catalysts to bring down the required temperatures. The combined hydrogen production/reduction process will be optimized by variation of numerous parameters (temperature, pressure, concentration, catalysts and their loading, catalytic additives for the H2 generation). Due to the multiple (not independent) parameters which need to be varied, a "Design of Experiments (DoE)" approach will be used rather than the "vary one parameter at a time". Furthermore, design and optimization of all above-mentioned synthesis routes require a detailed insight into the reaction mechanisms on a molecular level. Therefore the mechanism of both the non-metal catalyzed reduction reactions and metal catalyzed hydrogen gas production will be studied with various experimental (spectroscopic) and computational techniques. In addition, for reactions relying on heterogeneous catalysis, thorough characterization of the catalyst's structural features by various techniques (e.g. XRD, UV-DR, Raman spectroscopy) will be undertaken.

Researcher(s)

• Promoter: Maes Bert
• Co-promoter: Cool Pegie
• Co-promoter: Herrebout Wouter
• Co-promoter: Van Doorslaer Sabine

Research team(s)

• Organic synthesis (ORSY)

Project type(s)

• Research Project

Abstract

This Hercules proposal concerns screen printing facilities. Screen printing facilities enable UAntwerp to pioneer in the field of electronics, sensors and photocatalysis by (1) developing unique (photo)sensors/detectors (e.g. electrochemical sensors, photovoltaics, photocatalysis) by printing (semi)conducting materials on substrates, (2) designing parts of Internet of Things modules with more flexibility and more dynamically, meanwhile creating a unique valorization potential and IP position.

Researcher(s)

• Promoter: De Wael Karolien
• Co-promoter: Caen Joost
• Co-promoter: Cool Pegie
• Co-promoter: Janssens Koen
• Co-promoter: Meysman Filip
• Co-promoter: Samson Roeland
• Co-promoter: Steckel Jan
• Co-promoter: Verbruggen Sammy
• Co-promoter: Weyn Maarten

Research team(s)

Project type(s)

• Research Project

Abstract

The project focuses on the development of innovative sorbent materials for heavy metal recovery from aqueous waste streams. The innovative aspect of the research is in tailoring of the chemical composition of the materials. The newly developed sorbents will be upscaled and structured in granulates to build a small-scale prototype to enable their application in a relevant environment. The data generated in this project will be used to file a joint UAntwerp-VITO patent application. In order to strengthen the patent other possible applications of the newly developed materials will be explored.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera
• Co-promoter: Seftel Elena

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The aim of this research project is the simultaneous valorisation of inorganic waste streams (Ca, Si and Fe-based) and CO2 into sustainable building materials.The carbonatation process offers the possibility to reduce CO2 emissions in the PoA. In the project we investigate how wastestreams from the Port of Antwerp can be recycled and converted into new products with high-added value. This will be done by gaining insight in the reaction mechanisms and the specific role of silica and iron on the formation of the microstructure of the building materials.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Modern materials are made to perform a certain task very well at a low (energy) cost of production. This drive towards more efficient materials has shifted the attention from making e.g. the strongest material to making a sufficiently strong material at an acceptable use of natural resources. Combining this trend in materials science with the nano revolution where properties of materials depend increasingly on their structure at the nanoscale, requires scientific instruments that study these so-called soft materials on the nanoscale. Typically, this is a task for transmission electron microscopy (TEM) offering a look inside materials down to the atomic structure. A drawback of TEM however is that this process can destroy soft materials while viewing, making the analysis unreliable or impossible. In order to overcome this issue, we propose to acquire a so-called direct electron detector which efficiently detects every electron that interacts with a given material reducing the required electron dose by up to a factor of 100. This considerably shifts the field of applicability of TEM into the range of soft materials allowing us to resolve their structure down to the atomic level.

Researcher(s)

• Promoter: Verbeeck Johan
• Co-promoter: Breugelmans Tom
• Co-promoter: Cool Pegie
• Co-promoter: Lenaerts Silvia

Research team(s)

• Electron microscopy for materials research (EMAT)

Project type(s)

• Research Project

Abstract

PARTIAL-PGMs proposes an integrated approach for the coherent development of smart and innovative nanostructured automotive post-treatment systems by integrating TWCs (three-way catalysts) as part of the overall after-treatment system, namely the 1st generation of Gasoline Particulate Filters (GPFs), capable to meet future regulations, with reduced PGMs and REEs, leading to development of 2nd generation GPFs.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The aim of this research project is the simultaneous valorisation of inorganic waste streams (Ca, Si and Fe-based) and CO2 into sustainable building materials.The carbonatation process offers the possibility to reduce CO2 emissions in the PoA. In the project we investigate how wastestreams from the Port of Antwerp can be recycled and converted into new products with high-added value. This will be done by gaining insight in the reaction mechanisms and the specific role of silica and iron on the formation of the microstructure of the building materials.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This project aims to develop so-called "nanoreactors", which can be seen as an approach to heterogenization of homogeneous catalysis. The key idea is to develop self-assembling large-pore Metal Organic Frameworks (MOFs) via modification/optimization of their organic linkers. Starting from already existing networks, the organic linkers will be further functionalized at the side chains in order to couple them with a catalyst. The catalytic activity of the resulting nanoreactors will be demonstrated and their performance compared with the native catalyst in a homogeneous reaction mixture. As the reactors are crystalline, they have very well-defined pore shapes and sizes, the pores are continuous throughout the structure, and very controllable, reproducible and characterizeable. The project bridges the spearheads of "Materials Characterization" and "Sustainable Development".

Researcher(s)

• Promoter: Vande Velde Christophe
• Co-promoter: Cool Pegie
• Fellow: Fucci Rosa

Research team(s)

• Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS)
• Applied Electrochemistry & Catalysis (ELCAT)

Project type(s)

• Research Project

Abstract

This project represents a research contract awarded by the University of Antwerp. The supervisor provides the Antwerp University research mentioned in the title of the project under the conditions stipulated by the university.

Researcher(s)

• Promoter: Maes Bert
• Co-promoter: Abbaspour Tehrani Kourosch
• Co-promoter: Bogaerts Annemie
• Co-promoter: Cool Pegie
• Co-promoter: Herrebout Wouter
• Co-promoter: Johannessen Christian
• Co-promoter: Meynen Vera
• Co-promoter: Tavernier Serge
• Co-promoter: Vande Velde Christophe
• Fellow: Sergueev Serguei

Research team(s)

• Organic synthesis (ORSY)

Project type(s)

• Research Project

Abstract

This project represents a research contract awarded by the University of Antwerp. The supervisor provides the Antwerp University research mentioned in the title of the project under the conditions stipulated by the university. The AGRECHEM consortium is an excellence centre of the University of Antwerp, focusing on green and sustainable chemistry. One of the biggest future challenges is the production of fine chemicals in a sustainable way. The quest for synthetic routes that are at the same time eco-friendly and economically feasible requires a concerted input of scientists with a variety of specializations. The progress in synthesis goes hand in hand with progress in materials characterization. Therefore, the consortium brings together two main research groups on synthetic chemistry and three research units specialized in material characterization techniques with emphasis on gaining mechanistic insight in chemical reactions. The consortium aims at consolidating and increasing the existing excellence in sustainable chemistry at the University of Antwerp.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Goovaerts Etienne
• Co-promoter: Janssens Koen
• Co-promoter: Maes Bert
• Co-promoter: Van Doorslaer Sabine

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The influences of the reactor parameters and the material properties of nanoporous Ti-catalysts on the conversion, selectivity and light efficiency will be examined for the photocatalytic reduction of CO2 with water to methanol. In addition, nanoporous materials with photocatalytic activity under visible light will be developed in order to obtain a higher conversion and light efficiency. On the one hand this will be accomplished by doping with copper and nitrogen, on the other hand by the deposition of gold and silver.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Hoeven Nick

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The treatment of wastewater for the removal of organic pollutants is a world-wide concern. Advanced Oxidation Processes (AOPs) are known as powerful methods, able to decompose toxic organic pollutants. One of the well-established AOP methods for water treatment is photocatalysis with TiO2/UV radiation. The improvement of AOP method for photocatalysis with TiO2 under solar light remains a big challenge. The main goal of this project is therefore the development of sustainable TiO2 based photocatalysts working under solar light for removal of pollutants(dyes) from wastewater.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The present FWO-Vito project aims the development of regenerable sorbent materials for aqueous waste streams. The increasing pressure on critical raw materials is the driver for the need of new materials which allow the recovery and replacement of the pristine materials source. This project aims at the recovery of phosphate ions from several waste streams. The goal of the research is on both materials development as well as on materials structuring into an optimum architecture, which can be successfully used for sorption of valuable elements from aqueous wastes as well as other side streams. Therefore, novel structured LDH-type materials with high sorption capacity and selectivity for phosphate anions will be developed.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Seftel Elena

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The high CO2 concentration in the earth's atmosphere causes major concern because of its impact on climate change (global warming). In this project, we study the CO2 conversion into renewable fuels and value-added chemicals, such as CO (in case of pure CO2 splitting), syngas (CO/H2) and hydrocarbons (e.g. methanol, formic acid,…) in the case of CO2/CH4 conversion, by means of plasma catalysis. In this way, we can solve two problems in one step, as "waste" can be converted into value-added chemicals.

Researcher(s)

• Promoter: Bogaerts Annemie
• Co-promoter: Cool Pegie

Research team(s)

• Plasma Lab for Applications in Sustainability and Medicine - Antwerp (PLASMANT)

Project type(s)

• Research Project

Abstract

The project aims at the development of biosensors for small molecules by incorporating globin proteins in nanoporous inorganic or hybrid organic-inorganic materials. This involves globin purification, synthesis and modification of the porous materials, and realization of the electrochemical cell. The structural and electronic properties of the globins will be monitored during the process with resonance Raman and electron paramagnetic resonance spectroscopy.

Researcher(s)

• Promoter: Van Doorslaer Sabine
• Co-promoter: Cool Pegie
• Co-promoter: De Wael Karolien
• Co-promoter: Dewilde Sylvia
• Co-promoter: Meynen Vera

Research team(s)

• Biophysics and Biomedical Physics

Project type(s)

• Research Project

Abstract

In this project, we develop structurally stable, leaching free, ordered porous heterogeneous catalysts offering simultaneously acid and basic sites that are not mutually interacting. We aim therefore at the synthesis of very advanced and very stable hybrid materials (combined organic-onorganic) with a precise location of the functional groups.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This project represents a formal research agreement between UA and on the other hand FISCH. UA provides FISCH research results mentioned in the title of the project under the conditions as stipulated in this contract.

Researcher(s)

• Promoter: Sörensen Kenneth
• Co-promoter: Cool Pegie
• Co-promoter: Maes Bert
• Co-promoter: Meynen Vera

Research team(s)

• Engineering Management

Project type(s)

• Research Project

Abstract

The main objective of the NEXTGENCAT project is the development of novel eco-friendly nano-structured automotive catalysts utilizing transition metal nanoparticles that can partially or completely replace the Platinum group metals (PGMs). Based on nanotechnology, low cost particles will be incorporated into different substrates, including advanced ceramics and silicon carbides, for the development of efficient and inexpensive catalysts.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This project aims to develop and study the insights of titania-based photocatalysts with tailored properties for the photodegradation under visible light of pollutants from both air and aqueous systems. The goal of this research is to introduce visible light absorption on mesoporous titania by doping or co-doping with different metallic or non-metallic elements. The project will focus on the possible applications of the obtained photocatalysts by testing both the CO2 reforming in the presence of water as well as on the photodegradation of textile dyes from aqueous wastes under visible light.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Seftel Elena

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The ChemWater project develops a programme of interdisciplinary commonly-defined activities and strategies for measures concerning better regulation, standardization, public procurement, fiscal incentives and business development that will facilitate the rapid commercialization of the innovative materials, products, services and (nano)-technologies necessary to achieve an efficient management of industrial water.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The relation between structure and activity will be optimized for two classes of nanoporous materials: TiO2 nanotubes combined with Ag nanoparticles and Periodic Mesoporous Organosilica's. This will be done based on a multidisciplinary approach combining advanced 3-dimensional imaging with modern computational methods at an atomic scale. This will lead to a more direct optimization of the synthesis and activity of the nanoporous materials in comparison to the classic trial-and-error procedures.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Bals Sara
• Co-promoter: Batenburg Joost
• Co-promoter: Partoens Bart

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This research project aims the formation of zeolite-functionalised materials via innovative synthesis methods to increase and to control the zeolite character of these materials. An important part of the research includes the characterisation of the structures with bimodal porosity, with special attention to the selectivity towards adsorption processes. For these materials, it is expected that the adsorption-properties will be different in comparison to the classical zeolites and the mesoporous materials with amorphous silica walls. In this project, fundamental knowledge will be obtained on the structure of the zeolite nanoparticles, used to build up the materials. Important information is the size and the crystallinity of the particles. Different synthesis methods will be applied in order to prepare the final materials. Hereby a control on the morphology and the ratio microporosity/mesoporosity in relation to the functionality of the materials is very important.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera
• Fellow: Van Oers Cynthia

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The project aims at the development of novel hybrid mesoporous materials for sorption and catalysis. Different synthesis approaches are investigated and the solids will be thoroughly characterized by electron paramagnetic resonance.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

- Synthesis of nanoporous titania (and titania-silica) materials and detailed characterization (with spectroscopic techniques such as FTIR, Raman, porosity analysis, thermal analysis) - Testing of the nanomaterials in fotocatalytic applications - Elucidation of the synthesis mechanism of nanoporous materials via advanced EPR techniques

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Van Doorslaer Sabine
• Fellow: Vinck Evi

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The aim of the research is the synthesis of high-selective ceramic membranes for process-integrated applications through template assisted sol-gel methods. These methods not only open the possibility for membranes with high selectivity and tailor-made pore dimensions, but will also result in membranes with chiral selectivity. The performance of the developed membranes will be tested in solvent filtration. One specific process application will be selected in order to demonstrate the market potential of these materials.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Herregods Sebastiaan

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The aim of the project is to perform a systematic and fundamental study of the different synthesis conditions which leads to the formation of composite (micro- and mesoporous) materials with incorporated heteroelements. Focus will be on the controlled formation of the pores, the morphology and the coordination, the localisation and the strength of the active elements. Also the possibility to have a controlled variation of the ratio of microporosity/mesoporosity and the diameter of the pores is very important for this type of materials. Elucidation of the synthesis mechanism to the formation of the materials will be very important.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Vernimmen Jarian

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The application field of ceramic membranes is more and more expanding towards in process separations, which demand solvent stable nanoporous membranes. Ceramic nanoporous membranes are very stable in solvents, however inherently hydrophilic. A tremendous potential for solvent resistant membranes exists for fine-chemical (pharmaceutical, agrochemical, etc.) industry. Therefore, stable ceramic membranes are being developed that exhibit surface organic functional groups to allow strongly improved separations and high fluxes for less polar solvents.

Researcher(s)

• Promoter: Meynen Vera
• Co-promoter: Cool Pegie
• Co-promoter: Maes Bert

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This project aims the optimalisation of the synthesis of hydrophobic membranes, in order to reach an efficient separation for molecules of 500 Dalton. The research concentrates on the optimalisation on powders and includes post-modification reactions and a detailed characterization. The advantage of post-modifications is that a broad range of functionalities become possible. The project aims to explore these possibilities in order to develop procedures for optimal functionalised membranes.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In this project the influence of the synthesis conditions and the applied coating techniques on the final properties of deposited thin layers of titania (TiO2) will be studied. Innovative methods for the formation of porous powders (UA, promotor P. Cool) will be combined with the expertise on the formation of thin layers (UHasselt, promotor M.K. Van Bael). Also post-modification synthetic techniques will be applied in order to further control the stability and the properties of the materials. The scientific knowledge which exists for the formation of powders will be transferred to the deposition of thin layers. In this way, fundamental knowledge on the parameters which control the structure and the properties of the deposited titania materials will be obtained. This is of great importance for photo-initiated applications of the materials.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This research project aims the formation of zeolite-functionalised materials via innovative synthesis methods to increase and to control the zeolite character of these materials. An important part of the research includes the characterisation of the structures with bimodal porosity, with special attention to the selectivity towards adsorption processes. For these materials, it is expected that the adsorption-properties will be different in comparison to the classical zeolites and the mesoporous materials with amorphous silica walls. In this project, fundamental knowledge will be obtained on the structure of the zeolite nanoparticles, used to build up the materials. Important information is the size and the crystallinity of the particles. Different synthesis methods will be applied in order to prepare the final materials. Hereby a control on the morphology and the ratio microporosity/mesoporosity in relation to the functionality of the materials is very important.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Meynen Vera
• Fellow: Van Oers Cynthia

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The objective of this research project is the development of a new generation of mesoporous materials that combine the benefits of mesoporosity with high selectivity and stability. Two main synthesis approaches are formulated. On one hand, mesoporous materials will be directly combined with zeolites by linking their synthesis to one another. On the other hand, selectivity and stability will be increased by the formation of mesoporous hybrid (organic- inorganic) materials.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The aim of the project is to perform a systematic and fundamental study of the different synthesis conditions which leads to the formation of composite (micro- and mesoporous) materials with incorporated heteroelements. Focus will be on the controlled formation of the pores, the morphology and the coordination, the localisation and the strength of the active elements. Also the possibility to have a controlled variation of the ratio of microporosity/mesoporosity and the diameter of the pores is very important for this type of materials. Elucidation of the synthesis mechanism to the formation of the materials will be very important.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Vernimmen Jarian

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This research project aims the formation of zeolite-functionalised materials via innovative synthesis methods to increase and to control the zeolite character of these materials. An important part of the research includes the characterisation of the structures with bimodal porosity, with special attention to the selectivity towards adsorption processes. For these materials, it is expected that the adsorption-properties will be different in comparison to the classical zeolites and the mesoporous materials with amorphous silica walls. In this project, fundamental knowledge will be obtained on the structure of the zeolite nanoparticles, used to build up the materials. Important information is the size and the crystallinity of the particles. Different synthesis methods will be applied in order to prepare the final materials. Hereby a control on the morphology and the ratio microporosity/mesoporosity in relation to the functionality of the materials is very important.

Researcher(s)

• Promoter: Cool Pegie
• Fellow: Van Oers Cynthia

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The focus of this project is essentially on PMO's (Periodic Mesoporous Organosilica's), a new class of porous hybrid materials. BTEB (1,4-bistriethoxysolylbenzene) is used as a precursor, which results in a structure with crystalline walls. Due to organic functionalisation of the benzene molecule, further modification of the materials is possible. In literature the possible applications of PMO's are frequently mentioned but never explored in detail. Therefore the goal of this research is to investigate the possible use of these materials in applications as catalysis and metal scavenging and to compare them with the already existing analogue functionalized polymer and silicamaterials

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Maes Bert
• Fellow: Smeulders Geert

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This project aims to exploit in the field of materials processing the evolution in magnet technology whereby magnets with a stronger field and larger size become available at an affordable price. For this project processes have been selected which were estimated to be of strategic value by the research providing organisations, but also by the industries involved in material processing in Flanders. The selected processes involve: a) the removal of fine inclusions from a liquid metal and b) the texturing of functional ceramics to enhance their properties.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In this project inorganic support materials (such as SiO2, TiO2) will be modified with organic functional groups in order to increase the selectivity, activity and stability for applications in the field of ceramic membranes for filtration, waste water treatment,... In this way inorganic-organic hybrid materials are prepared with superiour properties.

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

This research project aims at the synthesis of a new family of catalytic support materials with combined micro- and mesoporosity and a high structural stability. Two strategies are being followed: (1) the creation of crystalline zeolitic and microporous nanocapsules inside the mesopores of a ordered support material and (2) the synthesis of a templated and ordered mesoporous support material with crystalline microporous walls. Such materials can be very interesting in various fiels such as selective catalysis, controlled drug release, adsorption and separation. Their stability will allow them to be used in heavy duty processes.

Researcher(s)

• Promoter: Cool Pegie
• Promoter: Vansant Etienne
• Fellow: Meynen Vera

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

The project involves a collaboration between chemists and chemical engineers in the field of heterogeneous catalysis. The aim is to characterize and to fully understand the active site of the catalyst on the atomic level, in order to build catalysts with improved properties in a reactor in the chemical industry.

Researcher(s)

• Promoter: Cool Pegie
• Promoter: Vansant Etienne

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In this project we will combine the unique possibilities of high-field and pulsed EPR techniques, ODMR and resonance Raman techniques present in the SffiAC and ECM laboratories (UA) with the synthetic and catalytic expertises of the Laboratory for Adsorption and Catalysis (UA) and DICOC (UG). This project will also occur in collaboration with Dr. D. Murphy (Dept. of Chemistry, Cardiff Univ.) who will complement the project with his expertise on CW ENDOR (see appendix I, bibliography and letter of support D. Murphy). In the first part, the formation of mesoporous materials will be studied. In a second part, the incorporation of metal complexes will be analyzed, studying the functionalization of the porous materials, the isolated metal complexes, the incorporation of the precursors and the final products. In a last step the catalytic activity of the systems will be tested. Structure-characterization methods will be used to determine the mechanisms of the catalytic activity. The aim of the project is to understand better the formation and location of the metal-ion sites in mesoporous systems and to link these to the analysis of the catalytic activity and reaction mechanisms to optimize selectively the synthesis of these catalysts.

Researcher(s)

• Promoter: Van Doorslaer Sabine
• Co-promoter: Cool Pegie

Research team(s)

• Biophysics and Biomedical Physics

Project type(s)

• Research Project

Abstract

New nanoporous siliceous and non-siliceous materials with a combined micro- and mesoporosity will be developed and catalytically activated with transition metaloxides following several innovative procedures. A combination of macroscopic techniques and electron microscopy will be used to fully characterize the catalysts. TEM will determine the morphology and the pore structure and tries to locate the active metal sites in the porous catalyst matrix. This information is essential to understand the relation between synthesis strategy, catalyst structure and catalytic performance.

Researcher(s)

• Promoter: Cool Pegie
• Promoter: Vansant Etienne
• Co-promoter: Van Tendeloo Staf

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

To stimulate research on the macroscopic or bulk description of sensor materials, in which the microcrystalline layer, of which the bulk properties largely determine the precise activity of the resulting gas sensor, occupies a central position, a consortium of four research groups is created in which expertise in the field of the synthesis of new sensor materials and the electrochemical procedure , which forms the basis of the construction of sensors, is combined with know-how in the field of morphological studies on (organic) materials using nitrogen physisorption methods and electron microscopy, and with expertise in the field of the measurement of phase equilibrium partition coefficients between two phases.

Researcher(s)

• Promoter: Blockhuys Frank
• Co-promoter: Cool Pegie
• Co-promoter: Van Tendeloo Staf

Research team(s)

Project type(s)

• Research Project

Abstract

This Network of Excellence focusses on the research collaboration between 19 excellent European research centres, and 10 European satellite partners. The joint research activities are build on 5 main process pillars: 1) synthesis processes; 2) catalytic processes; 3) sorption processes (separation and storage); 4) membrane processes; 5) innovative processes. The laboratory of adsorption and catalysis aims to develop new formation processes of porous materials with specific properties in the field of 'clean technology' applications.

Researcher(s)

• Promoter: Cool Pegie
• Promoter: Vansant Etienne

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In order to give special features to textile materials, they can be modified towards a specific functionality. In this project, porous catalysts will be added to a series of different textile materials. The active catalysts will adsorb harmful odours and toxic components (cigarette smoke, sweat, formaldehyde, VOC's) from the indoor air and catalytically degradate them, in order to avoid saturation. The adsorption and catalytic degradation properties of the materials will be tested and optimised, using different titania catalysts and the necessary analytical techniques (main focus will be on the selectivity and the stability of the catalysts).

Researcher(s)

• Promoter: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Functionalised hexagonal mesoporous MSU silica supports with ultra-large pores between 4 and 15 nm are synthesized following a new, environmentally and economically friendly templated synthesis route. In a post-synthesis modification step, the surface of the solids will be functionalised with suitable groups (thiol, chloride, amine groups) that will interact strongly with enzymes. Next the immobilization of a series of enzymes with different sizes on the MSU supports is performed. The influence of the support porosity and surface characteristics on the enzyme loadings are evaluated, as well as the stability of the resulting enzyme/silica composites. Finally, the activity of the enzyme/mesoporous MSU catalysts is assessed in an appropriate biocatalytic reaction.

Researcher(s)

• Promoter: Cool Pegie
• Co-promoter: Vansant Etienne

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Researcher(s)

• Promoter: Vansant Etienne
• Fellow: Cool Pegie

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

In this project different porous materials (microporous and mesoporous) are chemically modified in order to change in a controlled way the adsorption/desorption and their possible catalytic behaviour.

Researcher(s)

• Promoter: Cool Pegie
• Promoter: Vansant Etienne

Research team(s)

• Laboratory of adsorption and catalysis (LADCA)

Project type(s)

• Research Project

Abstract

Porous inorganic materials find interesting industrial applications in the field of adsorption and catalysis because of their high surface area and pore volume. Since large-pore materials become more and more important, porous clay heterostructures (PCHs) with a combined micro- and mesoporosity will be prepared. The aim is to develop a reproducible synthesis method, based on the polymerization of silicates between clay plates. Since PCHs exhibit acid properties a characterization of surface sites will be performed and the activity as acid catalyst investigated. A modification with transition metal ions allows the creation of active heterogeneous catalysts. A relation between the reactivity and the different surface structures present will be drawn.

Researcher(s)

• Promoter: Vansant Etienne
• Fellow: Cool Pegie

Research team(s)

Project type(s)

• Research Project

Abstract

Various pillared clays are modified with carbon in order to maximize the adsorption capacity and selectivity in gas adsorptions.

Researcher(s)

• Promoter: Vansant Etienne
• Fellow: Cool Pegie

Research team(s)

Project type(s)

• Research Project

Abstract

Various pillared clays are modified with carbon in order to maximize the adsorption capacity and selectivity in gas adsorptions.

Researcher(s)

• Promoter: Vansant Etienne
• Fellow: Cool Pegie

Research team(s)

Project type(s)

• Research Project

Abstract

Various pillared clays are modified with carbon in order to maximize the adsorption capacity and selectivity in gas adsorptions.

Researcher(s)

• Promoter: Vansant Etienne
• Fellow: Cool Pegie

Research team(s)

Project type(s)

• Research Project