Influence of the calcination temperature on the Au/FeOx/Al2O3 catalyst

被引：12

作者：

Wang, Donghui ^{[1
]}

Hao, Zhengping

Cheng, Daiyun

Shi, Xicheng

机构：

[1] Res Inst Chem Def, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

来源：

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2006年 / 81卷 / 07期

关键词：

gold catalyst; calcination; activity mechanism; CO oxidation;

D O I：

10.1002/jctb.1533

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The effect of calcination temperature on the electronic structure of gold catalyst was investigated in this paper. CO oxidation was employed as a test reaction to correlate the phase changes to the catalytic activity. The TPR, XPS and XRD characterization showed that the highly active Au/FeOx/Al2O3 catalyst contained both gold atoms and ions. The catalytic performance of gold catalyst may depend on the Au-0/Au3+ ratio. The best activity in the present work was obtained when the Au-0/Au+ ratio was about 0.89. (c) 2006 Society of Chemical Industry

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收藏

页码：1246 / 1251

页数：6

相关论文

共 26 条

[1] 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

[2] Gold-catalysed oxidation of carbon monoxide [J].

Bond, GC ;

Thompson, DT .

GOLD BULLETIN, 2000, 33 (02) :41-51

[3] Catalysis by gold [J].

Bond, GC ;

Thompson, DT .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1999, 41 (3-4) :319-388

[4] All that glitters is not Au0 [J].

Davis, RJ .

SCIENCE, 2003, 301 (5635) :926-927

[5] Direct evidence of oxidized gold on supported gold catalysts [J].

Fu, L ;

Wu, NQ ;

Yang, JH ;

Qu, F ;

Johnson, DL ;

Kung, MC ;

Kung, HH ;

Dravid, VP .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (09) :3704-3706

[6] Surface characterization of Au/HY by Xe-129 NMR and diffuse reflectance IR spectroscopy of adsorbed CO. Formation of electron-deficient gold particles inside HY cavities [J].

Guillemot, D ;

Borovkov, VY ;

Kazansky, VB ;

PolissetThfoin, M ;

Fraissard, J .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (19) :3587-3591

[7] Catalysis by supported gold: Correlation between catalytic activity for CO oxidation and oxidation states of gold [J].

Guzman, J ;

Gates, BC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (09) :2672-2673

[8] Simultaneous presence of cationic and reduced gold in functioning MgO-supported CO oxidation catalysts: Evidence from X-ray absorption spectroscopy [J].

Guzman, J ;

Gates, BC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (31) :7659-7665

[9] WHY GOLD IS THE NOBLEST OF ALL THE METALS [J].

HAMMER, B ;

NORSKOV, JK .

NATURE, 1995, 376 (6537) :238-240

[10] Mechanism of gold activation in supported gold catalysts for CO oxidation [J].

Hao, ZP ;

An, LD ;

Wang, HL ;

Hu, TD .

REACTION KINETICS AND CATALYSIS LETTERS, 2000, 70 (01) :153-160