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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 Adams (Institutionen för kemi och kemiteknik, Teknisk ytkemi ; Kompetenscentrum katalys (KCK)) ; Per-Anders Carlsson (Institutionen för kemi och kemiteknik, Teknisk ytkemi ; Kompetenscentrum katalys (KCK)) ; Marcus Aldén ; Edvin Lundgren
Nature Communications (2041-1723). Vol. 6 (2015), p. Art. no. 7076.
[Artikel, refereegranskad vetenskaplig]

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.

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Denna post skapades 2015-05-08. Senast ändrad 2015-07-28.
CPL Pubid: 216823


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