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

Blomberg, Sara LU ; Brackmann, Christian LU ; Gustafson, Johan LU ; Aldén, Marcus LU ; Lundgren, Edvin LU and Zetterberg, Johan LU (2015) In ACS Catalysis 5(4). p.2028-2034
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Catalysis
volume
5
issue
4
pages
2028 - 2034
publisher
The American Chemical Society
external identifiers
  • pmid:25893136
  • wos:000352464400002
  • scopus:84926500526
ISSN
2155-5435
DOI
10.1021/cs502048w
language
English
LU publication?
yes
id
9a108ebc-f741-4af3-a45b-9e64965fc79b (old id 5341238)
date added to LUP
2015-04-30 11:57:52
date last changed
2017-11-12 03:42:40
@article{9a108ebc-f741-4af3-a45b-9e64965fc79b,
  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       = {Blomberg, Sara and Brackmann, Christian and Gustafson, Johan and Aldén, Marcus and Lundgren, Edvin and Zetterberg, Johan},
  issn         = {2155-5435},
  language     = {eng},
  number       = {4},
  pages        = {2028--2034},
  publisher    = {The American Chemical Society},
  series       = {ACS Catalysis},
  title        = {Real-Time Gas-Phase Imaging over a Pd(110) Catalyst during CO Oxidation by Means of Planar Laser-Induced Fluorescence.},
  url          = {http://dx.doi.org/10.1021/cs502048w},
  volume       = {5},
  year         = {2015},
}