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Design of industrial scale photoreactors for gas-liquid reactions
KU Leuven

Design of industrial scale photoreactors for gas-liquid reactions

2025-06-16 (Europe/Brussels)
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About the employer

KU Leuven is an autonomous university. It was founded in 1425. It was born of and has grown within the Catholic tradition.

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This PhD project is embedded in the Group of Transport Processes and Reactions at KU Leuven under the supervision of Prof. Simon Kuhn. We also form part of the larger Process Engineering for Sustainable Systems (ProcESS) group at the Department of Chemical Engineering with expertise in process intensification, use of alternative energy sources and membrane technology.
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Project

The chemical industry is the fourth-largest producer in the manufacturing sector in Europe, and has already made significant progress in reducing greenhouse gas (GHG) emissions through optimized processes. However, to meet the European climate change objectives by 2050 and become carbon-neutral, it must transition away from fossil fuels towards renewable energy sources. A promising approach is using light from artificial light sources to drive reactions, enabling new pathways and degrees of freedom for process development in intrinsically electrified chemical manufacturing. Photochemistry in continuously operated reactors meets many principles of Green Chemistry and process intensification, including enhanced safety, high energy efficiency, and reduced waste. Photons are environmentally friendly, traceless reagents, and photochemical reactions often exhibit high selectivity with minimal waste. 
However, light attenuates exponentially in the reaction medium, which means it can only penetrate a thin film of a few millimetres when the reaction solution is strongly absorbing, requiring special consideration when developing efficient photochemical processes, especially with a view towards scale-up. Within the industrial doctoral network PROSPER, we will address these challenges by designing industrial scale photoreactors by considering the heat and mass transfer demands in the reaction solution as well as the photonic efficiency.
The offered PhD project will characterize heat and mass transfer as well as the photon flux in gas-liquid flow-photoreactors at the laboratory and industrial scale. The objective it to identify the photon/mass/heat limitations via a kinetic and photon transport model, and to exploit the results to formulate a scale-up strategy for efficient gas-liquid flow-photoreactors. This work will be performed in close collaboration and with secondments at our industrial partners.

Profile

  • Requirement: Master's degree in Chemical Engineering, Process Engineering, Materials Engineering or the like with strong overall marks
  • Knowledge of photochemical processes will be regarded as a plus
  • Knowledge of kinetic modeling will be regarded as a plus
  • Adequate English (written and verbal communication) for scientific interactions required
  • Strong motivation is a must
  • Willingness to work at interdisciplinary boundaries
Importantly, applicants must also meet the requirements of the Marie Skłodowska-Curie Conditions of Mobility of Researchers. Researchers can be of any nationality and are required to undertake transnational mobility. This means that researchers must not have resided in the country of their host beneficiary (Belgium) for more than 12 months in the past 3 years.

Offer

The successful candidate will be offered a PhD position to become part of our international team with global research links.

Interested?

For more information, please contact Prof. Simon Kuhn via mail: [email protected]

KU Leuven strives for an inclusive, respectful and socially safe environment. We embrace diversity among individuals and groups as an asset. Open dialogue and differences in perspective are essential for an ambitious research and educational environment. In our commitment to equal opportunity, we recognize the consequences of historical inequalities. We do not accept any form of discrimination based on, but not limited to, gender identity and expression, sexual orientation, age, ethnic or national background, skin colour, religious and philosophical diversity, neurodivergence, employment disability, health, or socioeconomic status. For questions about accessibility or support offered, we are happy to assist you at this email address.

Job details

Title
Design of industrial scale photoreactors for gas-liquid reactions
Employer
Location
Oude Markt 13 Leuven, Belgium
Published
2025-05-09
Application deadline
2025-06-16 23:59 (Europe/Brussels)
2025-06-16 23:59 (CET)
Job type
PhD
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