Stabilization of Catalytically Active Cu plus Surface Sites on TitaniumCopper Mixed-Oxide Films**
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
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.
CO oxidation, IR spectroscopy, mixed oxides, scanning tunneling microscopy, surface chemistry
IdentifiersURN: urn:nbn:se:kth:diva-147038DOI: 10.1002/anie.201402435ISI: 000335809200014ScopusID: 2-s2.0-84900875568OAI: oai:DiVA.org:kth-147038DiVA: diva2:728482
FunderSwedish Research Council
QC 201406242014-06-242014-06-232014-06-24Bibliographically approved