Oxygen storage and mobility on model three-way catalysts

被引：72

作者：

Duprez, D

Descorme, C

Birchem, T

Rohart, E

机构：

[1] Univ Poitiers, LACCO, CNRS, UMR 6503, F-86022 Poitiers, France

[2] Rhodia, Ctr Rech Aubervilliers, F-93308 Aubervilliers, France

[3] Rhodia Rare Earths, Zone Ind, F-17041 La Rochelle, France

来源：

TOPICS IN CATALYSIS | 2001年 / 16卷 / 1-4期

关键词：

oxygen storage; oxygen mobility; TWC; OBD; isotopic exchange;

D O I：

10.1023/A:1016622612521

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Oxygen storage capacity (OSC) of TW catalysts has a strong impact on their performances under oscillatory conditions. This paper reviews the different methods developed for OSC measurements, the effects of catalyst composition on OSC as well as the impact of OSC on TW catalysis, concentrating on the results obtained in our laboratory. Use of OSC measurements for catalysts control (on-board diagnostic) is also examined. The role of superoxide species as intermediates in the oxygen storage process will be emphasized. Finally, we shall review the recent developments on CeZr-based oxides.

引用

页码：49 / 56

页数：8

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