title: 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 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.
authors.affiliation: Division of Combustion Physics, Lund University, Lund 221 00, Sweden.
authors.forename: Johan
authors.initials: J
authors.lastname: Zetterberg
authors.affiliation: Division of Synchrotron Radiation Research, Lund University, Lund 221 00, Sweden.
authors.forename: Sara
authors.initials: S
authors.lastname: Blomberg
authors.affiliation: Division of Synchrotron Radiation Research, Lund University, Lund 221 00, Sweden.
authors.forename: Johan
authors.initials: J
authors.lastname: Gustafson
authors.affiliation: Division of Synchrotron Radiation Research, Lund University, Lund 221 00, Sweden.
authors.forename: Jonas
authors.initials: J
authors.lastname: Evertsson
authors.affiliation: Division of Combustion Physics, Lund University, Lund 221 00, Sweden.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Competence Centre for Catalysis, Chalmers University of Technology, 412 96 Göteborg, Sweden.
authors.forename: Emma C
authors.identifier: 0000000343413713
authors.initials: EC
authors.lastname: Adams
authors.affiliation: Competence Centre for Catalysis, Chalmers University of Technology, 412 96 Göteborg, Sweden.
authors.forename: Per-Anders
authors.initials: PA
authors.lastname: Carlsson
authors.affiliation: Division of Combustion Physics, Lund University, Lund 221 00, Sweden.
authors.forename: Marcus
authors.initials: M
authors.lastname: Aldén
authors.affiliation: Division of Synchrotron Radiation Research, Lund University, Lund 221 00, Sweden.
authors.forename: Edvin
authors.initials: E
authors.lastname: Lundgren