Catalytically active gold: The role of cluster morphology

被引：96
作者：
Choudhary, TV
Goodman, DW [1 ]
机构：
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
[2] Conoco Phillips, Bartlesville Technol Ctr, Bartlesville, OK 74004 USA
来源：
APPLIED CATALYSIS A-GENERAL | 2005年 / 291卷 / 1-2期
关键词：
CO oxidation; gold catalysis; particle size; nano-gold;
D O I：
10.1016/j.apcata.2005.01.049
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：
Recent studies of the CO oxidation activity exhibited by highly dispersed nano-gold (Au) catalysts have reached the following conclusions: (a) bilayer structures of Au are critical; (b) a strong interaction between An and the support leads to wetting and electronrich An; (c) oxidative environments deactivate An catalyst by re-oxidizing the support, which causes the An to de-wet and sinter. Recent results have shown that the direct intervention of the support is not necessary to facilitate the CO oxidation reaction; therefore, an Au-only mechanism is sufficient to explain the reaction kinetics. (c) 2005 Published by Elsevier B.V.
引用
收藏
页码：32 / 36
页数：5
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