Premium
Stabilization of Catalytically Active Cu + Surface Sites on Titanium–Copper Mixed‐Oxide Films
Author(s) -
Baber Ashleigh E.,
Yang Xiaofang,
Kim Hyun You,
Mudiyanselage Kumudu,
Soldemo Markus,
Weissenrieder Jonas,
Senanayake Sanjaya D.,
AlMahboob Abdullah,
Sadowski Jerzy T.,
Evans Jaime,
Rodriguez José A.,
Liu Ping,
Hoffmann Friedrich M.,
Chen Jingguang G.,
Stacchiola Darío J.
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201402435
Subject(s) - catalysis , copper , oxide , titanium , metal , titanium oxide , inorganic chemistry , chemistry , copper oxide , heterogeneous catalysis , organic chemistry
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 Cu 2 O film leads to the formation of a stable mixed‐metal oxide with a Cu + terminated surface that is highly active for CO oxidation.