Comparative studies of the N2O/H2, N2O/CO, H2/O2 and CO/O2 reactions on supported gold catalysts:: effect of the addition of various oxides

被引：84
|
作者：
Gluhoi, AC
Dekkers, MAP
Nieuwenhuys, BE
机构：
[1] Leiden Inst Chem, Dept Heterogeneous Catalysis & Surface Chem, NL-2300 RA Leiden, Netherlands
[2] Fluor Daniel BV, NL-2003 EJ Haarlem, Netherlands
来源：
JOURNAL OF CATALYSIS | 2003年 / 219卷 / 01期
关键词：
gold; nitrous oxide; carbon monoxide; hydrogen; oxygen; additives; transition metal oxides; alkali metal oxides;
D O I：
10.1016/S0021-9517(03)00185-4
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：
The reduction of N2O with H-2 and CO has been investigated on Au/TiO2, Au/Al2O3, Au/(MOx)-O-1/(MOx)-O-II/Al2O3, and Au/MOx/Al2O3 (M-I, (II), M = Li, Rb, Mg, Co, Mn, Ce, La, Ti). In addition, for comparison, the oxidation reactions of H-2 and CO with O-2 have been studied on some selected catalysts. All the samples are highly active at low temperatures for all the reactions. The oxides added to Au/Al2O3 improve the catalytic performance of gold. Interesting and synergistic effects were observed when a mixture of metal oxides is added to Au/Al2O3, e.g., Rb2O (Li2O) and CeOx. Possible mechanisms are proposed. (C) 2003 Elsevier Inc. All rights reserved.
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收藏
页码：197 / 205
页数：9
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