PREPARATION AND CATALYTIC BEHAVIOR OF SUBNANOMETER GOLD DEPOSITED ON TIO2 BY VACUUM CALCINATION

被引：58

作者：

CUNNINGHAM, D ^{[1
]}

TSUBOTA, S ^{[1
]}

KAMIJO, N ^{[1
]}

HARUTA, M ^{[1
]}

机构：

[1] GOVT IND RES INST, MIDORIGAOKA 1-8-31, IKEDA, OSAKA 563, JAPAN

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 1993年 / 19卷 / 01期

关键词：

D O I：

10.1163/156856793X00497

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Titania-supported gold catalysts calcined under vacuum have been studied using a combination of TEM and activity measurements for CO oxidation. A time dependent study by TEM suggested the presence of highly dispersed gold, a high percentage of which lies below the 1 nm resolution limit. A comparison between Au/TiO2 samples calcined in vacuum and air has shown large differences in catalytic behaviour, indicating that not only the size of gold particles but also the oxidized state of the support surface is important.

引用

页码：1 / 13

页数：13

共 14 条

[1]

Baker R. T. K., 1986, ACS S SERIES, V298

[2] METAL SUPPORT INTERACTION - GROUP-VIII METALS AND REDUCIBLE OXIDES [J].

HALLER, GL ;

RESASCO, DE .

ADVANCES IN CATALYSIS, 1989, 36 :173-235

[3]

HARUTA M, 1991, CAT SCI TEC, V1, P331

[4] 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

[5]

Haruta M., 1988, SUCCESSFUL DESIGN CA, P33

[6]

Haruta M., 1988, CHEM EXPRESS, V3, P159

[7]

SCHWANK J, 1986, ACS SYM SER, V298, P182

[8] GOLD TITANIA INTERACTIONS - TEMPERATURE-DEPENDENCE OF SURFACE-AREA AND CRYSTALLINITY OF TIO2 AND GOLD DISPERSION [J].

SHASTRI, AG ;

DATYE, AK ;

SCHWANK, J .

JOURNAL OF CATALYSIS, 1984, 87 (01) :265-275

[9]

Stevenson SA, 1987, METAL SUPPORT INTERA

[10] STRONG METAL-SUPPORT INTERACTIONS [J].

TAUSTER, SJ .

ACCOUNTS OF CHEMICAL RESEARCH, 1987, 20 (11) :389-394

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