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NO reduction by isobutene, in the presence of oxygen, on platinum and copper: a comparative study
1996 (English)In: Catalysis Today, ISSN 0920-5861, E-ISSN 1873-4308, Vol. 29, no 1-4, p. 59-65Article in journal (Refereed) Published
Abstract [en]

The reaction of NO, oxygen and isobutene was studied under conditions close to stoichiometric, on a platinum and on a copper disk in order to better understand the role of each metal, free of any support and dispersion effects. The products of the reaction were analysed by mass spectrometry and an XPS characterization of the surface was carried out at different stages of the reaction. A correlation between the catalytic activity for NO conversion and the presence of adsorbed intermediates has been clearly demonstrated on platinum. On copper, a redox cycle of the metal is necessary to activate the catalyst. On platinum, oxygen is necessary to initiate the reaction, clean the surface and form reactive intermediates; the reaction is strongly sensitive to oxygen concentration, whereas on copper, oxygen does not directly participate in the reaction mechanism.

Place, publisher, year, edition, pages
1996. Vol. 29, no 1-4, p. 59-65
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Other Physics Topics
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Fysik
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URN: urn:nbn:se:ltu:diva-4988DOI: 10.1016/0920-5861(95)00264-2Local ID: 300babd0-3949-11dd-8721-000ea68e967bOAI: oai:DiVA.org:ltu-4988DiVA: diva2:977862
Note
Upprättat; 1996; Bibliografisk uppgift: Japan-EC Joint Workshop on the Frontiers of Catalytic Science and Technology for Energy, Environment and Risk Prevention; 20080613 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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