Pd/Ce0.6Zr0.4O2/Al2O3 as advanced materials for three-way catalysts -: Part 1.: Catalyst characterisation, thermal stability and catalytic activity in the reduction of NO by CO

被引：119

作者：

Di Monte, R

Fornasiero, P

Kaspar, J

Rumori, P

Gubitosa, G

Graziani, M

机构：

[1] Univ Trieste, Dipartimento Sci Chim, I-34127 Trieste, Italy

[2] Magneti Marelli DSS, I-10078 Venaria, TO, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2000年 / 24卷 / 3-4期

关键词：

exhaust catalysts; thermal stability of three-way catalysts; palladium containing CeO2-ZrO2 solid solution; CeO2-ZrO2 mixed oxides; NO reduction; CO oxidation;

D O I：

10.1016/S0926-3373(99)00102-2

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：

Pd-loaded Ce0.6Zr0.4O2 solid solutions supported on Al2O3 are investigated as catalysts for the reduction of NO by CO. The attention is focused on the role of the Ce0.6Zr0.4O2 and of the Pd dispersion on the catalytic activity. The system shows a very high activity below 500 K, which is almost independent on the Pd dispersion. The high activity is attributed to a promoting effect of the Ce0.6Zr0.4O2 On the NO conversion. Investigation of the influence of high temperature treatments disclosed a thermal stabilisation of both Ce0.6Zr0.4O2 and Al2O3 in the Ce0.6Zr0.4O2/Al2O3 system. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 167

页数：11

共 38 条

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