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Direct comparison of the reactivity of the non-oxidic phase of Ru(0001) and the RuO2 phase in the Co oxidation reaction

Over, H.; Balmes, O. and Lundgren, Edvin LU (2009) In Surface Science 603(2). p.298-303
Abstract
Applying in situ surface X-ray diffraction (SXRD) together with on-line mass spectrometry during the CO oxidation over Ru(0001) allows a direct comparison of the reactivity of the non-oxidic state with that of the RuO2(110) covered surface. This comparison reveals that the RuO2(110) surface is a catalytically active phase at least as active as the non-oxidic phase. At high CO and O-2 pressures of 200 mbar and temperatures above 550 K, the CO oxidation reaction does not proceed isothermally on the RuO2(110) surface. The released reaction heat leads rather to an increase of the sample temperature of up to 130 K accompanied by a self-acceleration of the CO oxidation reaction. (C) 2008 Elsevier B.V. All rights reserved.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
In, situ SXRD, Structure-activity correlation, CO oxidation, Ruthenium dioxide
in
Surface Science
volume
603
issue
2
pages
298 - 303
publisher
Elsevier
external identifiers
  • wos:000263384500008
  • scopus:58349104175
ISSN
0039-6028
DOI
10.1016/j.susc.2008.11.012
language
English
LU publication?
yes
id
60b5a71a-61fa-4ced-bb6f-5286d2c25bcc (old id 1372681)
date added to LUP
2009-05-08 13:31:20
date last changed
2017-07-02 04:05:59
@article{60b5a71a-61fa-4ced-bb6f-5286d2c25bcc,
  abstract     = {Applying in situ surface X-ray diffraction (SXRD) together with on-line mass spectrometry during the CO oxidation over Ru(0001) allows a direct comparison of the reactivity of the non-oxidic state with that of the RuO2(110) covered surface. This comparison reveals that the RuO2(110) surface is a catalytically active phase at least as active as the non-oxidic phase. At high CO and O-2 pressures of 200 mbar and temperatures above 550 K, the CO oxidation reaction does not proceed isothermally on the RuO2(110) surface. The released reaction heat leads rather to an increase of the sample temperature of up to 130 K accompanied by a self-acceleration of the CO oxidation reaction. (C) 2008 Elsevier B.V. All rights reserved.},
  author       = {Over, H. and Balmes, O. and Lundgren, Edvin},
  issn         = {0039-6028},
  keyword      = {In,situ SXRD,Structure-activity correlation,CO oxidation,Ruthenium dioxide},
  language     = {eng},
  number       = {2},
  pages        = {298--303},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {Direct comparison of the reactivity of the non-oxidic phase of Ru(0001) and the RuO2 phase in the Co oxidation reaction},
  url          = {http://dx.doi.org/10.1016/j.susc.2008.11.012},
  volume       = {603},
  year         = {2009},
}