Effect of Au loading, H2O and CO concentration on the stability of Au/ZnO catalysts for room-temperature CO oxidation

被引：13

作者：

Wang, GY ^{[1
]}

Zhang, WX ^{[1
]}

Lian, HL ^{[1
]}

Liu, QS ^{[1
]}

Jiang, DZ ^{[1
]}

Wu, TH ^{[1
]}

机构：

[1] Jilin Univ, Dept Chem, Changchun 130023, Peoples R China

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2002年 / 75卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Au/ZnO; room-temperature; CO oxidation; stability;

D O I：

10.1023/A:1015263332467

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：

Au/ZnO catalysts prepared by co-precipitation method with different Au:Zn atomic ratios have been studied for room-temperature CO oxidation in the presence/absence of water in the feed stream. The catalysts exhibited excellent catalytic activity and stability compared with pure ZnO. Furthermore, it was found that the lifetime of Au/ZnO catalysts was improved significantly by increasing CO concentration but decreased by addition of H2O in the feed stream. The deactivation may be related to the sintering of metallic gold and the accumulation of carbonate-like species in the catalyst.

引用

页码：343 / 351

页数：9

共 11 条

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