The effect of different types of additives on the catalytic activity of Au/Al2O3 in propene total oxidation:: transition metal oxides and ceria

被引：139

作者：

Gluhoi, AC

Bogdanchikova, N

Nieuwenhuys, BE

机构：

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

[2] Univ Nacl Autonoma Mexico, Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico

来源：

JOURNAL OF CATALYSIS | 2005年 / 229卷 / 01期

关键词：

gold; additives; promoters; cocatalyst; ceria; transition metal oxides; propene oxidation; Mars and van Krevelen mechanism;

D O I：

10.1016/j.jcat.2004.10.003

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：

The total oxidation of C3H6 was investigated over Au/Al2O3, and multicomponent Au/MOx/Al2O3 (M: Ce, Mn, Co, Fe) catalysts prepared by deposition-precipitation with urea. The catalysts have been characterized by means of X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), total surface area (BET), and diffuse reflectance ultraviolet-visible spectroscopy DR/UV-Vis. Based on this characterization, it was concluded that gold is present as Au-0. The most active catalyst is Au/CeOx/Al2O3. Ceria and the transition metal oxides act as cocatalysts. It can supply oxygen via a Mars and van Krevelen mechanism. (C) 2004 Elsevier Inc. All rights reserved.

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页码：154 / 162

页数：9

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