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Stabilization of Catalytically Active Cu plus Surface Sites on TitaniumCopper Mixed-Oxide Films**
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2014 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 21, 5336-5340 p.Article in journal (Refereed) Published
Abstract [en]

The oxidation of CO is the archetypal heterogeneous catalytic reaction and plays a central role in the advancement of fundamental studies, the control of automobile emissions, and industrial oxidation reactions. Copper-based catalysts were the first catalysts that were reported to enable the oxidation of CO at room temperature, but a lack of stability at the elevated reaction temperatures that are used in automobile catalytic converters, in particular the loss of the most reactive Cu+ cations, leads to their deactivation. Using a combined experimental and theoretical approach, it is shown how the incorporation of titanium cations in a Cu2O film leads to the formation of a stable mixed-metal oxide with a Cu+ terminated surface that is highly active for CO oxidation.

Place, publisher, year, edition, pages
2014. Vol. 53, no 21, 5336-5340 p.
Keyword [en]
CO oxidation, IR spectroscopy, mixed oxides, scanning tunneling microscopy, surface chemistry
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-147038DOI: 10.1002/anie.201402435ISI: 000335809200014ScopusID: 2-s2.0-84900875568OAI: diva2:728482
Swedish Research Council

QC 20140624

Available from: 2014-06-24 Created: 2014-06-23 Last updated: 2014-06-24Bibliographically approved

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Soldemo, MarkusWeissenrieder, JonasStacchiola, Dario J.
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