Chemical vapor deposition of gold on Al2O3, SiO2, and TiO2 for the oxidation of CO and of H2

被引：459
|
作者：
Okumura, M
Nakamura, S
Tsubota, S
Nakamura, T
Azuma, M
Haruta, M
机构：
[1] Osaka Natl Res Inst, MITI, AIST, Ikeda, Osaka 563, Japan
[2] Osaka Inst Technol, Dept Appl Chem, Asahi Ku, Osaka 535, Japan
来源：
CATALYSIS LETTERS | 1998年 / 51卷 / 1-2期
关键词：
chemical vapor deposition; gold catalysts; CO oxidation; hydrogen oxidation;
D O I：
10.1023/A:1019020614336
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In order to clarify the effect of metal oxide support on the catalytic activity of gold for CO oxidation, gold has been deposited on SiO2 with high dispersion by chemical vapor deposition (CVD) of an organo-gold complex. Comparison of Au/SiO2 with Au/Al2O3 and Au/TiO2, which were prepared by both CVD and liquid phase methods, showed that there were no appreciable differences in their catalytic activities as far as gold is deposited as nanoparticles with strong interaction. The perimeter interface around gold particles in contact with the metal oxide supports appears to be essential for the genesis of high catalytic activities at low temperatures.
引用
收藏
页码：53 / 58
页数：6
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