Rare earth metal modified CuO/γ-Al2O3 catalysts in the CO oxidation

被引：17

作者：

Sun, Guoxin ^{[1
]}

Mu, Xiaolei ^{[1
]}

Zhang, Yang ^{[1
]}

Cui, Yu ^{[1
]}

Xia, Guangming ^{[1
]}

Chen, Zhi ^{[1
]}

机构：

[1] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 05期

关键词：

Nano gamma-Al2O3; Supercritical CO2 drying; Copper-based catalysts; CO oxidation; Rare earth; OXIDE COMPOSITE CATALYSTS; FUEL-CELL APPLICATIONS; PREFERENTIAL OXIDATION; CARBON-MONOXIDE; CUO-CEO2; CATALYSTS; PERFORMANCE; METHANE; COPPER; PRETREATMENT; MECHANISM;

D O I：

10.1016/j.catcom.2010.10.013

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 nano-support gamma-Al2O3 was prepared by chemical precipitation and combined with supercritical CO2 drying. The products were characterized by XRD diffraction, N-2 physical adsorption-desorption, and transmission electron microscope (TEM) analysis. The supercritical CO2 drying method inhibited the agglomeration of particles and increased the sample's surface area. The rare earth metal modified CuO/Al2O3 catalysts were prepared by an impregnation method, and the catalytic activity for CO oxidation was investigated. Catalyst particles containing 3-4 components gave excellent catalytic activity. Lanthanum modified CuO/gamma-Al2O3 catalysts show a significant promoting effect and the catalytic activity is comparable to the Ce containing catalysts. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：349 / 352

页数：4

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