Activation of CO, O2 and H2 on gold-based catalysts

被引：37

作者：

Gluhoi, AC ^{[1
]}

Vreeburg, HS ^{[1
]}

Bakker, JW ^{[1
]}

Nieuwenhuys, BE ^{[1
]}

机构：

[1] Leiden Inst Chem, Dept Heterogeneous Catalysis & Surface Chem, NL-2300 RA Leiden, Netherlands

来源：

APPLIED CATALYSIS A-GENERAL | 2005年 / 291卷 / 1-2期

关键词：

gold; alumina; ceria; CO oxidation; hydrogen; deuterium; isotopic exchange reaction;

D O I：

10.1016/j.apcata.2004.11.048

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：

Au/CeOx/Al2O3 is highly active for CO oxidation at low temperatures and full conversion is already achieved around 60 degrees C. From experimental results, it is concluded that ceria can act as oxygen supplier probably via Mars and van Krevelen mechanism. The H-2-D-2 isotopic exchange reaction is also efficiently catalyzed by Au/Al2O3. The gold particle size is of crucial importance for high activity. Most likely, a gold surface rich in defects activates the H-2 (D-2) molecules.(c) 2005 Elsevier B.V. All rights reserved.

引用

页码：145 / 150

页数：6

共 34 条

[31] Reduction of nitrogen monoxide with propene in the presence of oxygen and moisture over gold supported on metal oxides [J].

Ueda, A ;

Oshima, T ;

Haruta, M .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 12 (2-3) :81-93

[32] THE THERMODYNAMIC PROPERTIES OF ISOTOPIC SUBSTANCES [J].

UREY, HC .

JOURNAL OF THE CHEMICAL SOCIETY, 1947, (MAY) :562-581

[33] THE EFFECT OF PRETREATMENT ON THE ACTIVITY OF GAMMA-ALUMINA .2. HYDROGEN-DEUTERIUM EXCHANGE [J].

WELLER, SW ;

HINDIN, SG .

JOURNAL OF PHYSICAL CHEMISTRY, 1956, 60 (11) :1506-1512

[34] Adsorption and dissociation of O2 on gold surfaces:: Effect of steps and strain [J].

Xu, Y ;

Mavrikakis, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (35) :9298-9307

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