An alternative way of reporting on the redox behaviour of ceria-based catalytic materials:: Temperature-chemical environment-oxidation state diagrams

被引：20

作者：

Bernal, S ^{[1
]}

Blanco, G ^{[1
]}

Pintado, JM ^{[1
]}

Rodríguez-Izquierdo, JM ^{[1
]}

Yeste, MP ^{[1
]}

机构：

[1] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, E-11510 Puerto Real, Cadiz, Spain

来源：

CATALYSIS COMMUNICATIONS | 2005年 / 6卷 / 09期

关键词：

D O I：

10.1016/j.catcom.2005.05.011

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：

Temperature-chemical environment-oxidation state diagrams are proposed as an alternative way of reporting on the redox behaviour of ceria-based catalytic materials. In these diagrams, the changes occurred in the reduction degree of the investigated materials are plotted against temperature for different chemical atmospheres (5%O-2,/He, He, 5%H-2/Ar, and 5%CO/He). Compared to more conventional parameters like oxygen storage capacity, these diagrams allow us to gain a much wider view of the redox response of the investigated system. As an example, the diagrams are used to discuss the redox properties of two different ceria-terbia mixed oxide samples. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：582 / 585

页数：4

共 23 条

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