Aluminium doped ceria-zirconia supported palladium-alumina catalyst with high oxygen storage capacity and CO oxidation activity

被引：12

作者：

Dong, Qiang ^{[1
]}

Yin, Shu ^{[1
]}

Guo, Chongshen ^{[1
]}

Wu, Xiaoyong ^{[1
]}

Kimura, Takeshi ^{[1
]}

Sato, Tsugio ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 12期

基金：

日本学术振兴会;

关键词：

Nanostructures; Oxides; Chemical synthesis; catalytic properties; ENHANCED THERMAL-STABILITY; CEO2-ZRO2; SOLID-SOLUTIONS; REDUCTION; BEHAVIOR; PARTICLES; OXIDES; NO;

D O I：

10.1016/j.materresbull.2013.05.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Ce0.5Zr0.3Al0.2O1.9/Pd-gamma-Al2O3 catalyst prepared by a mechanochemical route and calcined at 1000 *C for 20 h in air atmosphere to evaluate the thermal stability. The prepared Ce0.5Zr0.3Al0.2O1.9/Pd-gamma-Al2O3 catalyst was characterized for the oxygen storage capacity (OSC) and CO oxidation activity in automotive catalysis. For the characterization, X-ray diffraction, transmission electron microscopy and the Brunauer-Emmet-Teller (BET) technique were employed. The OSC values of all samples were measured at 600 degrees C using thermogravimetric-differential thermal analysis. Ce0.5Zr0.3Al0.2O1.9/Pd-gamma-Al2O3 catalyst calcined at 1000 degrees C for 20h with a BET surface area of 41 m(2) g(-1) exhibited the considerably high OSC of 583 mu mol-O g(-1) and good OSC performance stability. The same synthesis route was employed for the preparation of the CeO2/Pd-gamma-Al2O3 and Ce0.5Zr0.5O2/Pd-gamma-Al2O3 for comparison. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：4989 / 4992

页数：4

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