On the rate determining step in the reduction of CeO2-ZrO2 mixed oxides

被引：94

作者：

Fornasiero, P ^{[1
]}

Kaspar, J ^{[1
]}

Graziani, M ^{[1
]}

机构：

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

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1999年 / 22卷 / 01期

关键词：

CeO2-ZrO2 mixed oxides; oxygen storage of; three-way catalysts; CeO2-ZrO2 solid solutions; reduction of;

D O I：

10.1016/S0926-3373(99)00038-7

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 temperature programmed reduction (TPR) of Ce0.5Zr0.5O2 mixed oxide is investigated by using H-1(2)/Ar and H-2(2)/Ar mixtures as reducing agents. For low temperature reduction (below 700 K), no differentiation of the TPR profiles between the two reductants is observed. This suggests that activation of the reducing agents, e.g. surface steps, is not rate limiting this reduction process under the TPR conditions. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：L11 / L14

页数：4