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

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??m) and temporal (15??s) 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.

SUBMITTER: Zetterberg J 

PROVIDER: S-EPMC4432634 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature