Low Temperature CO Oxidation over Supported Ultrathin MgO Films

被引：104
|
作者：
Hellman, Anders
Klacar, Simon
Groenbeck, Henrik [1 ]
机构：
[1] Chalmers Univ Technol, Competence Ctr Catalysis, SE-41296 Gothenburg, Sweden
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 46期
基金：
瑞典研究理事会;
关键词：
ADSORPTION; NO2;
D O I：
10.1021/ja906865f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Density functional theory is used to investigate CO oxidation over an ultrathin MgO film supported on Ag(100). O-2 is found to be activated on MgO/Ag(100) whereas CO is only weakly bonded to the surface. These adsorption properties together with a low activation barrier render the MgO/Ag system an efficient catalyst for CO oxidation at low temperatures. As the predicted mechanism is general in nature, the result is suggested to have implications for a wide range of oxidation reactions.
引用
收藏
页码：16636 / +
页数：4
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