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Importance of the Metal–Oxide Interface in Catalysis: In Situ Studies of the Water–Gas Shift Reaction by Ambient‐Pressure X‐ray Photoelectron Spectroscopy
Author(s) -
Mudiyanselage Kumudu,
Senanayake Sanjaya D.,
Feria Leticia,
Kundu Shankhamala,
Baber Ashleigh E.,
Graciani Jesús,
Vidal Alba B.,
Agnoli Stefano,
Evans Jaime,
Chang Rui,
Axnanda Stephanus,
Liu Zhi,
Sanz Javier F.,
Liu Ping,
Rodriguez José A.,
Stacchiola Darío J.
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201210077
Subject(s) - oxide , water gas shift reaction , x ray photoelectron spectroscopy , catalysis , metal , interface (matter) , nanoparticle , chemistry , computer science , nanotechnology , materials science , chemical engineering , molecule , organic chemistry , engineering , gibbs isotherm
Where oxide and metals meet : The activation of an efficient associative mechanistic pathway for the water–gas shift reaction by an oxide–metal interface leads to an increase in the catalytic activity of nanoparticles of ceria deposited on Cu(111) or Au(111) by more than an order of magnitude (see graph). In situ experiments demonstrated that a carboxy species formed at the metal–oxide interface is the critical intermediate in the reaction.