FT-IR study of Au/Fe2O3 catalysts for CO oxidation at low temperature

被引:176
作者
Minico, S [1 ]
Scire, S [1 ]
Crisafulli, C [1 ]
Visco, AM [1 ]
Galvagno, S [1 ]
机构
[1] UNIV CATANIA,DIPARTIMENTO SCI CHIM,I-95125 CATANIA,ITALY
关键词
CO oxidation; gold; FT-IR spectroscopy;
D O I
10.1023/A:1019081727173
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
Coprecipitated Au/Fe2O3 catalysts used for low-temperature catalytic oxidation of carbon monoxide have been studied by FT-IR spectroscopy of adsorbed CO. The FT-IR results have shown that after preparation and exposure to a CO/O-2 mixture gold is present on the surface mainly as Au1+ and Au-0 species. It has been found that in the CO oxidation Au1+ is more active and less stable than Au-0.
引用
收藏
页码:273 / 276
页数:4
相关论文
共 19 条
[1]   THE OXIDATION AND SCRAMBLING OF CO WITH OXYGEN AT ROOM-TEMPERATURE ON AU/ZNO [J].
BOCCUZZI, F ;
CHIORINO, A ;
TSUBOTA, S ;
HARUTA, M .
CATALYSIS LETTERS, 1994, 29 (1-2) :225-234
[2]   FTIR study of carbon monoxide oxidation and scrambling at room temperature over gold supported on ZnO and TiO2 .2. [J].
Boccuzzi, F ;
Chiorino, A ;
Tsubota, S ;
Haruta, M .
JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (09) :3625-3631
[3]   A kinetic and DRIFTS study of low-temperature carbon monoxide oxidation over Au-TiO2 catalysts [J].
Bollinger, MA ;
Vannice, MA .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1996, 8 (04) :417-443
[4]   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
[5]   REDUCTIVE CARBONYLATION OF GOLD(III) CHLORIDE [J].
DELLAMICO, DB ;
CALDERAZZO, F ;
MARCHETTI, F .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1976, (18) :1829-1831
[6]   HALOGENOCARBONYL COMPLEXES OF GOLD [J].
DELLAMICO, DB ;
CALDERAZZO, F ;
ROBINO, P ;
SEGRE, A .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1991, (11) :3017-3020
[7]   COMPARISON OF THE PERFORMANCE-CHARACTERISTICS OF PT/SNOX AND AU/MNOX CATALYSTS FOR LOW-TEMPERATURE CO OXIDATION [J].
GARDNER, SD ;
HOFLUND, GB ;
UPCHURCH, BT ;
SCHRYER, DR ;
KIELIN, EJ ;
SCHRYER, J .
JOURNAL OF CATALYSIS, 1991, 129 (01) :114-120
[8]   Gold and iron oxide associations under supergene conditions: An experimental approach [J].
Greffie, C ;
Benedetti, MF ;
Parron, C ;
Amouric, M .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1996, 60 (09) :1531-1542
[9]   LOW-TEMPERATURE OXIDATION OF CO OVER GOLD SUPPORTED ON TIO2, ALPHA-FE2O3, AND CO3O4 [J].
HARUTA, M ;
TSUBOTA, S ;
KOBAYASHI, T ;
KAGEYAMA, H ;
GENET, MJ ;
DELMON, B .
JOURNAL OF CATALYSIS, 1993, 144 (01) :175-192
[10]   GOLD CATALYSTS PREPARED BY COPRECIPITATION FOR LOW-TEMPERATURE OXIDATION OF HYDROGEN AND OF CARBON-MONOXIDE [J].
HARUTA, M ;
YAMADA, N ;
KOBAYASHI, T ;
IIJIMA, S .
JOURNAL OF CATALYSIS, 1989, 115 (02) :301-309