Supported gold/MOx catalysts for NO/H2 and CO/O2 reactions

被引：103
作者：
Dekkers, MAP [1 ]
Lippits, MJ [1 ]
Nieuwenhuys, BE [1 ]
机构：
[1] Leiden State Univ, Gorlaeus Labs, Inst Chem, Dept Heterogeneous Catalysis & Surface Chem, NL-2300 RA Leiden, Netherlands
来源：
CATALYSIS TODAY | 1999年 / 54卷 / 04期
关键词：
gold; metal oxide; NO reduction; CO oxidation;
D O I：
10.1016/S0920-5861(99)00201-1
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The reduction of NO with H-2 and the oxidation of CO with O-2 were investigated over silica- and alumina supported gold/metal oxide catalysts (M: Co, La, Ce). In general, the silica supported samples were less active than the alumina supported ones, probably due to the presence of large gold particles. The presence of metal oxide was beneficial to the activity in the NO/H-2 reaction and the CO/O-2 reaction over Au/SiO2. Opposite behavior was observed with the NO reduction over Au/Al2O3 where the metal oxide might cover active species. Addition of cobalt oxide and lanthana improves the selectivity towards N-2. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：381 / 390
页数：10
相关论文
共 38 条
[1]  
BAIKER A, 1992, NEW FRONTIERS CATALY, P1257
[2]   The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidation [J].
Bamwenda, GR ;
Tsubota, S ;
Nakamura, T ;
Haruta, M .
CATALYSIS LETTERS, 1997, 44 (1-2) :83-87
[3]  
Blick K, 1998, CATAL LETT, V50, P211
[4]   FTIR, UV-Vis, and HRTEM study of Au/ZrO2 catalyst:: Reduced reactivity in the CO-O2 reaction of electron-deficient gold sites present on the used samples [J].
Boccuzzi, F ;
Cerrato, G ;
Pinna, F ;
Strukul, G .
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (30) :5733-5736
[5]  
BOCCUZZI F, 1996, J PHYS CHEM-US, V100, P3626
[6]   The effect of promoters on Pt/Al2O3 catalysts for the reduction of NO by C3H6 under lean-burn conditions [J].
Burch, R ;
Watling, TC .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 11 (02) :207-216
[7]   Nitric oxide and carbon monoxide adsorption on lanthana-supported platinum and rhodium catalysts [J].
Cordatos, H ;
Gorte, RJ .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 7 (1-2) :33-48
[8]   PREPARATION AND CATALYTIC BEHAVIOR OF SUBNANOMETER GOLD DEPOSITED ON TIO2 BY VACUUM CALCINATION [J].
CUNNINGHAM, D ;
TSUBOTA, S ;
KAMIJO, N ;
HARUTA, M .
RESEARCH ON CHEMICAL INTERMEDIATES, 1993, 19 (01) :1-13
[9]   CO adsorption and oxidation on Au/TiO2 [J].
Dekkers, MAP ;
Lippits, MJ ;
Nieuwenhuys, BE .
CATALYSIS LETTERS, 1998, 56 (04) :195-197
[10]  
DEKKERS MEJ, UNPUB
1234