Structural and oxygen storage/release properties of CeO2-based solid solutions

被引：213

作者：

Trovarelli, A ^{[1
]}

机构：

[1] Univ Udine, Dipartiment Sci & Tecnol Chim, I-33100 Udine, Italy

来源：

COMMENTS ON INORGANIC CHEMISTRY | 1999年 / 20卷 / 4-6期

关键词：

ceria; CeO2; solid solutions; rare-earth oxides; auto-exhaust catalysis; oxygen storage capacity;

D O I：

10.1080/02603599908021446

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The use of mixed-oxides containing CeO2 as oxygen storage/release components is discussed with special focus on the applications of these materials in auto-exhaust catalytic converters. Ceria easily forms solid solutions with transition-metal/rare-earth oxides over a wide composition range. The incorporation of dopants like Zr4+, Pr3/4+, Tb3/4+ into the cubic fluorite lattice of CeO2 strongly affects the structural and energetic properties of the materials by lowering activation energy for oxygen migration and by increasing reducibility of the cerium cation. This augments both total and kinetic oxygen exchange between the solid and the gas phase under conditions typically encountered in real systems.

引用

页码：263 / 284

页数：22

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