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

被引：287

作者：

Mudiyanselage, Kumudu ^{[1
]}

Senanayake, Sanjaya D. ^{[1
]}

Feria, Leticia ^{[2
]}

Kundu, Shankhamala ^{[1
]}

Baber, Ashleigh E. ^{[1
]}

Graciani, Jesus ^{[1
,2
]}

Vidal, Alba B. ^{[1
]}

Agnoli, Stefano ^{[1
]}

Evans, Jaime ^{[3
]}

Chang, Rui ^{[4
]}

Axnanda, Stephanus ^{[5
]}

Liu, Zhi ^{[5
]}

Sanz, Javier F. ^{[2
]}

Liu, Ping ^{[1
]}

Rodriguez, Jose A. ^{[1
]}

Stacchiola, Dario J. ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

[2] Univ Seville, Dept Quim Fis, E-41012 Seville, Spain

[3] Cent Univ Venezuela, Fac Ciencias, Caracas 1020A, Venezuela

[4] Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2013年 / 52卷 / 19期

关键词：

ceria; heterogeneous catalysis; nanocatalysis; surface chemistry; watergas shift reaction; SURFACE-CHEMISTRY; MECHANISM; CO2; PHOTOEMISSION; CEOX/CU(111); ADSORPTION; OXIDATION; AU(111); COPPER;

D O I：

10.1002/anie.201210077

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：5101 / 5105

页数：5

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