Spatially and temporally resolved gas distributions around heterogeneous catalysts using infrared planar laser-induced fluorescence

Johan Zetterberg (), Sara Blomberg, Johan Gustafson, Jonas Evertsson, Jianfeng Zhou, Emma C. Adams, Per-Anders Carlsson, Marcus Aldén and Edvin Lundgren
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Johan Zetterberg: Lund University
Sara Blomberg: Lund University
Johan Gustafson: Lund University
Jonas Evertsson: Lund University
Jianfeng Zhou: Lund University
Emma C. Adams: Competence Centre for Catalysis, Chalmers University of Technology
Per-Anders Carlsson: Competence Centre for Catalysis, Chalmers University of Technology
Marcus Aldén: Lund University
Edvin Lundgren: Lund University

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Visualizing and measuring the gas distribution in close proximity to a working catalyst is crucial for understanding how the catalytic activity depends on the structure of the catalyst. However, existing methods are not able to fully determine the gas distribution during a catalytic process. Here we report on how the distribution of a gas during a catalytic reaction can be imaged in situ with high spatial (400 μm) and temporal (15 μs) resolution using infrared planar laser-induced fluorescence. The technique is demonstrated by monitoring, in real-time, the distribution of carbon dioxide during catalytic oxidation of carbon monoxide above powder catalysts. Furthermore, we demonstrate the versatility and potential of the technique in catalysis research by providing a proof-of-principle demonstration of how the activity of several catalysts can be measured simultaneously, either in the same reactor chamber, or in parallel, in different reactor tubes.

Date: 2015
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DOI: 10.1038/ncomms8076

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