Low-Temperature Catalytic H2 Oxidation over Au Nanoparticle/TiO2 Dual Perimeter Sites

被引：100
|
作者：
Green, Isabel Xiaoye [1 ]
Tang, Wenjie [2 ]
Neurock, Matthew [1 ,2 ]
Yates, John T., Jr. [1 ]
机构：
[1] Univ Virginia, Dept Chem, Charlottesville, VA 22904 USA
[2] Univ Virginia, Dept Chem Engn, Charlottesville, VA 22904 USA
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2011年 / 50卷 / 43期
基金：
美国国家科学基金会;
关键词：
gold catalysis; H-2; oxidation; kinetic isotope effect; perimeter site; titania support; CONDUCTION-BAND ELECTRONS; GOLD NANOPARTICLES; CO OXIDATION; INFRARED-SPECTROSCOPY; HYDROGEN-PEROXIDE; O-2; AU/TIO2; TIO2; CLUSTERS; SURFACE;
D O I：
10.1002/anie.201101612
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The catalytic reaction of H2+O2 over a Au/TiO 2 catalyst was studied by transmission IR spectroscopy and DFT calculations. A reaction path of O2-assisted H2 dissociation at the Au/TiO2 dual perimeter site was found to proceed through a Ti-OOH intermediate (see scheme). The calculated barrier range (0.13-0.25 eV) for the sequence of low-energy steps agree with the experimental Ea of 0.22 eV. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：10186 / 10189
页数：4
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