Freitag, 16. Februar 2024 // 10.30 - 12.00
Helmholtz-Zentrum Berlin, Fritz Haber Institute
BESSY II, Großer Hörsaal
A series of independent lectures with renowned experts in the fields of heterogeneous catalysis, thin film technology, physical chemistry, process engineering and material design. Jointly organised by Helmholtz-Zentrum Berlin and the Fritz Haber Institute as part of CatLab, these lectures offer a unique opportunity to explore the fundamentals and latest developments in catalysis research.
Winter semester 2023/24 – every friday from 10:30 - 12:00
Multiscale studies and engineering of surface-reactive systems
Gregor D. Wehinger, Clausthal University of Technology, Karlsruhe Institute of Technology
Tomorrow’s chemicals are facing massive transitions due to the need for an alternative energy input, changing feedstock, limited resources, varying cost structures, etc. Chemical and reaction engineering is in charge for chemical and electrochemical reactions to meet the upcoming business and technical objectives. For simultaneous process-product design, a multiscale understanding provides opportunities to consider phenomena on different time and length scales of the reaction system. In this talk, I will show how multiscale studies enable knowledge-based engineering of surface-reactive systems, such as heterogeneous catalytic, electrochemical, and multiphase processes. Examples are presented of catalytic fixed-bed reactors with an emphasis of particle-resolved CFD simulations taking the actual bed structure into account, the coupling with microkinetics, and scale bridging to the plant level. Some of those methods have been transferred successfully to stationary batteries, where pore- scale and cell-scale simulations reveal interactions between transport phenomena and battery performance. Finally, the study of a micro bubble column reactor is discussed showing opportunities and challenges of using multiscale approaches in multiphase systems.
Contact for content-related questions:
Annette Trunschke (FHI)