Available Projects for Master Students

Currently the following calls for MSc projects are open. If you are interested submit your request via the online form linked to here First please consult our page information for students.

 

Supervisor(s): Matteo Monai, Helen King (Geosciences)
Title: Can magnetic manipulation of FeS growth change its catalytic properties?
Description: The need for alternative feedstocks to conventional fossil fuels have put the development of carbon capture, storage and, in particular, utilisation technologies firmly on the scientific and political agenda. Although the catalytic potential of Fe-S nanoparticles is clear from their electronic make-up, production of iron sulphides is complicated and time consuming. However, iron sulphides have surface specific magnetic properties that may influence their behaviour. As surface reactivity is a key parameter for the nucleation and growth of minerals, this means that we may be able to manipulate these phenomena using magnetic fields to optimise iron sulphide growth for catalysis. In this multi-disciplinary project, the group of Helen King from the Department of Geosciences is starting to grow Fe-sulphides in the presence of different magnetic field strengths, while the MSc student in the ICC group will then examine whether this treatment can change the catalytic projects of the FeS particles.

 

Supervisor(s): Sebastian Rejman, Ina Vollmer
Title: Understanding the Effect of Acidity and Pore Structure in Catalytic Cracking of Polyolefins
Description:The majority of the plastic waste produced worldwide ends up either in a landfill, or is incinerated. Only 12% is recycled, and with current mechanical recycling technology, the resulting recycled plastic is often of significantly lower quality than the original virgin material. Chemical recycling is an emerging technology that aims at converting plastic waste back into chemical building blocks that can be then converted into a variety of products using existing chemical infrastructure. Some approaches are already applied commercially: Pyrolysis of polyolefins yields a mixture of liquid hydrocarbons that can be fed into a steam cracker.1 Using a catalyst in this process allows to lower the energy requirements of the process, and can shift the product distribution towards more valuable products like aromatics.2 Many catalyst properties influence the reaction, e.g. Lewis and Brønsted acidity, pore structure and metal loading. In order to design novel catalyst for polyolefin cracking, the role of these effects must be understood. The goal of this thesis is to understand how acidity or pore structure of the catalyst affects activity and selectivity of the reaction, building upon prior research in our group.
Requirements: Initial experience with programming (e.g. Python or Matlab), interest in catalysis and polymer chemistry.
Earliest possible start: November 2022
References:
1. Vollmer, I. et al. Beyond Mechanical Recycling: Giving New Life to Plastic Waste. Angew. Chemie – Int. Ed. 59, 15402–15423 (2020).
2. Vollmer, I., Jenks, M. J. F., González, R. M., Meirer, F. & Weckhuysen, B. M. Plastic Waste Conversion over a Refinery Waste Catalyst. Angew. Chemie Int. Ed. 60, 16101 (2021).

 

Supervisor(s): Bram Kappé
Title: 
Colloidal Ni nanoparticles on various supports as catalysts to study structure sensitivity in CO2 hydrogenation
Description:
 Most catalytic reactions are structure sensitive, which means that the surface atoms of a supported metal catalyst differ in activity. The specific activity of surface atoms depends nanoparticle shape, size and type of support. To study these effects monodisperse nanoparticles of several sizes are required. We have recently developed a novel size-tunable synthesis procedure for small, monodisperse colloidal Ni nanoparticles. In this project these Ni particles will be deposited on several different supports. The resulting catalysts will be tested for CO2 hydrogenation using operando IR, allowing simultaneous study of the activity and reaction mechanism. This will provide unique opportunity to systematically study the metal-support sites where the CO2 reaction is thought to take place. In this project, you will learn how to perform inert synthesis using a Schlenk line and glovebox, and become proficient in TEM, XRD and operando spectroscopy such as FT-IR.

 

Supervisor(s): Xinwei Ye, Pieter Bruijnincx (OCC) and Bert Weckhuysen
Title: Heterogeneous catalysts for green synthesis of ethylene glycol ethers
Description: Ethylene glycol ethers are chemicals that are widely used in detergents and paints. They are also used for the synthesis of glycol diethers and can further convert into nonionic surfactants. However, the state-of-the art synthesis of ethylene glycol ethers is based on ethylene oxide as reactant. Besides being a highly toxic and explosive reagent, its production is highly dependent on fossil resources.
In this project, we aim to explore a greener and safer synthesis method without ethylene oxide while using heterogeneous catalysts that activate fatty alcohols and/or ethylene carbonate to produce ethylene glycol ethers. Double Metal Cyanides (DMC) are polymers wherein two or more metal ions are linked by cyanides. DMCs act as highly lewis acid catalyst and are able to catalyze ring-opening reactions, for example. Due to their high thermal stability, they have a low toxicity under reaction conditions. The aim of this project is to investigate how the structure of DMC catalysts including metal coordination and complexing agents, affects its catalytic performance. In this project, you will learn to synthesize DMC catalyst, use several spectroscopic techniques (UV-VIS, FTIR, NMR) and perform catalytic performance tests.

 

Supervisor(s): Xinwei Ye and Bert Weckhuysen
Title: Specify the location of species in Cu-zeolites for methane partial oxidation
Description: To reduce the dependence on oil resources, the catalytic activation of methane to high-value chemicals over metal-modified zeolites has attracted extensive attention. Methane can be relatively easily produced from renewable biomass resources. Cu-exchanged zeolites exhibit distinct reactivity in low temperature conversion of methane to methanol, which is one of the holy grails in catalysis, but the role of the catalyst in this reaction is still poorly understood. The speciation of copper (oxidation state, cluster size, location) is highly dependent on the Si/Al ratio, Al distribution within the zeolite, and Cu loading. The co-existence of multiple Cu species makes it difficult, for example, to distinguish the actual active site for methane partial oxidation. To gain better fundamental insights into the reaction mechanisms, we aim to develop methods for controlling the Cu speciation within mordenite zeolites. Ex-situ/in-situ spectroscopies will be extensively used to study structure-performance relationships for Cu-zeolites. Prepared catalysts will be further employed in methane partial oxidation reactions combined with operando spectroscopy techniques (UV-VIS, FTIR, NMR).

 

Supervisor(s): Mirjam de Graaf, Romy Riemersma
Title: Composite zeolite-metal oxide thin films for the photocatalytic breakdown of indoor air pollutants
Description: Harmful and unpleasant odorous substances are present in many indoor environments in the form of volatile organic substances (VOCs).[1] Since people spend a lot of time indoors (e.g. at the office or our living room), it is important to have good indoor air quality. Zeolite materials functionalized with semiconducting metal oxides are good candidates to abate these harmful VOCs. The zeolite support provides a large surface area, whereas the metal oxides have the potential to use visible light to completely oxidize the VOCs to CO2 and water. These supported photocatalyst materials can be incorporated in a coating or paint that can be applied to e.g. walls or furniture as an air purifying coating. In our group a method has been developed to coat zeolite ZSM-5 films on various supports.[2] Such films are ideal candidates for the further development of VOC oxidizing coatings.
In this project, we will prepare zeolite supported metal oxides (e.g. cobalt oxide) into thin films to simulate a coating. The prepared materials will be characterized by SEM, UV-Vis-NIR spectroscopy, XRD and ATR-IR. The thin films will be tested for their photocatalytic activity, e.g. photocatalytic oxidation of acetone, using different visible light sources, such as simulated solar light and LED light of various wavelengths. Reaction products will be determined and followed using ATR-IR, FTIR, and GC. The focus of this project will be on the catalysis and characterization of the synthesized materials.
[1] Wang, S., Ang, H. M., & Tade, M. O. Environ. Int. 2007, 33(5), 694–705. doi: 10.1016/j.envint.2007.02.011
[2] Fu D.,  et al.,  Angewandte Chemie International Edition, 2017, 56, 11217-11221, doi: 10.1002/anie.201704846