ZGH Keynote Perspective Talk: Catalysis on High Entropy Alloys

24th. Apr. 2024, , ZGH, 03-121, Ruhr-Universität Bochum

Start: 24th. Apr. 2024. 10:00 a.m.
End: 24th. Apr. 2024. 11:30 a.m.

Prof. Dr. Jan Rossmeisl Department of Chemistry, University of Copenhagen, Denmark

The green transition requires discovery and development of new catalyst materials for sustainable production of chemicals and fuels. However, it is difficult to predict a material, which might have a high catalytic activity for a given reaction, therefore the development of catalysts up until now has been driven mainly by trial and error. It would increase the pace of development, if we could predict a range of promising materials or if we at least could understand the limitations of catalysis. In this context high entropy alloys offer a chemical space of possible materials where the composition can be smoothly varied and where the properties also might vary in a seamless manner. This is good news for catalysis as such a smooth space is easier to explore to determine the interesting regions in composition space. Furthermore, the highly heterogeneous nature of a high entropy alloy surface reveals fundamental effects which are important for chemistry on surfaces in general but are overlooked in the classic mean field view on catalysis.

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