Importance of the Metal-Oxide Interface in Catalysis: In Situ Studies of the Water-Gas Shift Reaction by Ambient-Pressure X-ray Photoelectron Spectroscopy

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 gr...

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Published inAngewandte Chemie (International ed.) Vol. 52; no. 19; pp. 5101 - 5105
Main Authors 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.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 03.05.2013
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
Activation
Catalysis
Catalytic activity
ceria
Cerium oxides
Copper
Deposition
Gold
heterogeneous catalysis
Lead (metal)
Metal oxides
Metals
nanocatalysis
Nanoparticles
Oxides
Photoelectron spectroscopy
Photoelectrons
Shift reaction
surface chemistry
water-gas shift reaction
X-rays
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Summary: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.
Bibliography:Ministerio de Economía y Competitividad - No. MAT2012-31526; No. CSD2008-0023
ArticleID:ANIE201210077
Research carried at BNL was financed by the US DOE, Office of BES (Grant No. DE-AC02-98CH10086). Some of the calculations were performed at the Center for Functional Nanomaterials at BNL. The main theoretical part was carried out by the group of J.F.S. and funded by the Ministerio de Economía y Competitividad (Spain, grants MAT2012-31526 and CSD2008-0023). Computational resources were provided by the Barcelona Centro Nacional de Supercomputación (Spain). J.E. thanks INTEVEP and IDB for grants used for the research in Venezuela.
ark:/67375/WNG-GB7VKG0M-2
US DOE, Office of BES - No. DE-AC02-98CH10086
istex:3D91FF7C27F3EB684106489A62939AB6A5F7D879
Research carried at BNL was financed by the US DOE, Office of BES (Grant No. DE‐AC02‐98CH10086). Some of the calculations were performed at the Center for Functional Nanomaterials at BNL. The main theoretical part was carried out by the group of J.F.S. and funded by the Ministerio de Economía y Competitividad (Spain, grants MAT2012‐31526 and CSD2008‐0023). Computational resources were provided by the Barcelona Centro Nacional de Supercomputación (Spain). J.E. thanks INTEVEP and IDB for grants used for the research in Venezuela.
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SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201210077