Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.

Sara Blomberg; Christian Brackmann; Johan Gustafson; Marcus Aldén; Edvin Lundgren; Johan Zetterberg

doi:10.1021/cs502048w

Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.

Sara Blomberg, Christian Brackmann, Johan Gustafson, Marcus Aldén, Edvin Lundgren, Johan Zetterberg

Research output: Contribution to journal › Article › peer-review

Abstract

The gas composition surrounding a catalytic sample has direct impact on its surface structure, which is essential when in situ investigations of model catalysts are performed. Herein a study of the gas phase close to a Pd(110) surface during CO oxidation under semirealistic conditions is presented. Images of the gas phase, provided by planar laser-induced fluorescence, clearly visualize the formation of a boundary layer with a significantly lower CO partial pressure close to the catalytically active surface, in comparison to the overall concentration as detected by mass spectrometry. The CO partial pressure variation within the boundary layer will have a profound effect on the catalysts' surface structure and function and needs to be taken into consideration for in situ model catalysis studies.

Original language	English
Pages (from-to)	2028-2034
Journal	ACS Catalysis
Volume	5
Issue number	4
DOIs	https://doi.org/10.1021/cs502048w
Publication status	Published - 2015

Subject classification (UKÄ)

Atom and Molecular Physics and Optics
Other Physics Topics

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10.1021/cs502048w

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title = "Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.",

abstract = "The gas composition surrounding a catalytic sample has direct impact on its surface structure, which is essential when in situ investigations of model catalysts are performed. Herein a study of the gas phase close to a Pd(110) surface during CO oxidation under semirealistic conditions is presented. Images of the gas phase, provided by planar laser-induced fluorescence, clearly visualize the formation of a boundary layer with a significantly lower CO partial pressure close to the catalytically active surface, in comparison to the overall concentration as detected by mass spectrometry. The CO partial pressure variation within the boundary layer will have a profound effect on the catalysts' surface structure and function and needs to be taken into consideration for in situ model catalysis studies.",

author = "Sara Blomberg and Christian Brackmann and Johan Gustafson and Marcus Ald{\'e}n and Edvin Lundgren and Johan Zetterberg",

year = "2015",

doi = "10.1021/cs502048w",

language = "English",

volume = "5",

pages = "2028--2034",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "The American Chemical Society (ACS)",

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T1 - Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.

AU - Blomberg, Sara

AU - Brackmann, Christian

AU - Gustafson, Johan

AU - Aldén, Marcus

AU - Lundgren, Edvin

AU - Zetterberg, Johan

PY - 2015

Y1 - 2015

N2 - The gas composition surrounding a catalytic sample has direct impact on its surface structure, which is essential when in situ investigations of model catalysts are performed. Herein a study of the gas phase close to a Pd(110) surface during CO oxidation under semirealistic conditions is presented. Images of the gas phase, provided by planar laser-induced fluorescence, clearly visualize the formation of a boundary layer with a significantly lower CO partial pressure close to the catalytically active surface, in comparison to the overall concentration as detected by mass spectrometry. The CO partial pressure variation within the boundary layer will have a profound effect on the catalysts' surface structure and function and needs to be taken into consideration for in situ model catalysis studies.

AB - The gas composition surrounding a catalytic sample has direct impact on its surface structure, which is essential when in situ investigations of model catalysts are performed. Herein a study of the gas phase close to a Pd(110) surface during CO oxidation under semirealistic conditions is presented. Images of the gas phase, provided by planar laser-induced fluorescence, clearly visualize the formation of a boundary layer with a significantly lower CO partial pressure close to the catalytically active surface, in comparison to the overall concentration as detected by mass spectrometry. The CO partial pressure variation within the boundary layer will have a profound effect on the catalysts' surface structure and function and needs to be taken into consideration for in situ model catalysis studies.

U2 - 10.1021/cs502048w

DO - 10.1021/cs502048w

M3 - Article

C2 - 25893136

SN - 2155-5435

VL - 5

SP - 2028

EP - 2034

JO - ACS Catalysis

JF - ACS Catalysis

IS - 4

ER -

Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.

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Subject classification (UKÄ)

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