期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 33, 页码 10589-10594出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201804942
关键词
fluid catalytic cracking; heterogeneous catalysis; magnetic properties; magnetophoresis; microfluidics
资金
- Netherlands Centre for Multiscale Catalytic Energy Conversion (MCEC), an NWO Gravitation programme - Ministry of Education, Culture and Science of the government of the Netherlands
A better understanding of the deactivation processes taking place within solid catalysts is vital to design better ones. However, since inter-particle heterogeneities are more a rule than an exception, particle sorting is crucial to analyse single catalyst particles in detail. Microfluidics offers new possibilities to sort catalysts at the single particle level. Herein, we report a first-of-its-kind 3D printed magnetophoretic chip able to sort catalyst particles by their magnetic moment. Fluid catalytic cracking (FCC) particles were separated based on their Fe content. Magnetophoretic sorting shows that large Fe aggregates exist within 20% of the FCC particles with the highest Fe content. The availability of BrOnsted acid sites decreases with increasing Fe content. This work paves the way towards a high-throughput catalyst diagnostics platform to determine why specific catalyst particles perform better than others.
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