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The catalytic oxidation of CO on polycrystalline Pd: Experiments and kinetic modelling
Linköping University, Department of Physics, Chemistry and Biology, Chemical and Optical Sensor Systems. Linköping University, Faculty of Science & Engineering. (Tillämpad Fysik)ORCID iD: 0000-0002-0873-2877
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology. Tekniska högskolan.
1998 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 412/413, 430-440 p.Article in journal (Refereed) Published
Abstract [en]

The catalytic oxidation of CO on a thin, polycrystalline Pd film has been studied. Even though the Pd film is expected to be dominated by (111) facets, some distinct differences compared to single crystalline Pd(111) are observed. A kinetic model for the CO oxidation reaction is presented. It gives good agreement with experiments, both in terms of CO2 reaction probability and CO coverage during reaction conditions. The model assumes a random distribution of the adsorbates, an activation energy for the reaction that decreases with increasing CO coverage, as well as a CO sticking coefficient that in a temperature dependent fashion depends on the oxygen coverage. Single crystal data available from the literature (initial sticking coefficients and heats of adsorption) were mainly used as input parameters. Thus, the model might also be a useful starting point when modeling the catalytic oxidation of CO on single crystal surfaces.

Place, publisher, year, edition, pages
1998. Vol. 412/413, 430-440 p.
National Category
Analytical Chemistry
URN: urn:nbn:se:liu:diva-118337DOI: 10.1016/S0039-6028(98)00462-2OAI: diva2:814484
Available from: 2015-05-27 Created: 2015-05-27 Last updated: 2015-06-08

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Eriksson, MatsEkedahl, Lars-Gunnar
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Chemical and Optical Sensor SystemsFaculty of Science & EngineeringDepartment of Physics, Chemistry and BiologyThe Institute of Technology
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