The electrical and catalytic properties of YBa2Cu3O7-x for oxidation reactions below 400 degrees C

被引：1

作者：

Caldararu, M ^{[1
]}

Ovenston, A ^{[1
]}

Walls, JR ^{[1
]}

机构：

[1] UNIV BRADFORD,DEPT CHEM ENGN,BRADFORD BD1 7DP,W YORKSHIRE,ENGLAND

来源：

JOURNAL OF MATERIALS SCIENCE | 1997年 / 32卷 / 11期

关键词：

D O I：

10.1023/A:1018628618206

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The a.c. electrical and catalytic properties of YBa2Cu3O7-x have been investigated by in situ dynamic experiments. The data indicate a strong dependence of surface conduction on chemisorbed spec ies which, if loosely bound, cause fluctuations. Proton-donating compounds produce an increase in conductivity and an oscillating behaviour. Fluctuations can also be associated with instability of the basic matrix at low temperatures in various atmospheres, and may explain the somewhat erratic catalytic properties of this material. In particular, the presence of water may lead to blocking of some adsorption-active catalytic sites.

引用

页码：2895 / 2902

页数：8

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