NANOPHASE CATALYTIC OXIDES .1. SYNTHESIS OF DOPED CERIUM OXIDES AS OXYGEN STORAGE PROMOTERS

被引：136

作者：

ZHANG, Y ^{[1
]}

ANDERSSON, S ^{[1
]}

MUHAMMED, M ^{[1
]}

机构：

[1] ROYAL INST TECHNOL, DEPT INORGAN CHEM, S-10044 STOCKHOLM, SWEDEN

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1995年 / 6卷 / 04期

关键词：

CATALYST PREPARATION (DOPING); OXALATE COPRECIPITATION; NANOPHASE; CERIUM OXIDE; OXYGEN VACANCY; OXYGEN STORAGE; ENVIRONMENTAL;

D O I：

10.1016/0926-3373(95)00041-0

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：

Doped CeO2 materials were synthesized with the aim to improve the performance of CeO2 as oxygen storage promoter in gas catalytic reactions. The coprecipitation method was used for the synthesis of fine oxalate precursors of high homogeneity and well defined composition. The chemical and morphological properties of both the coprecipitated oxalates and the calcined oxides were examined. The influence of doping of different metal cations into the CeO2 structure on the oxygen storage capacity in particular was investigated. Some of the doped oxides Ce(0.9)M(0.1)O(2-delta)(M = Ca, Nd, Pb, etc.) give an increased oxygen storage capacity, 20-40% higher than the undoped. Their redox activity also remarkably increased.

引用

页码：325 / 337

页数：13

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