Protonic conductivity of Pt/Al2O3 in hydrogen- and water-containing atmospheres

被引：15

作者：

Stoica, M

Caldararu, M

Ionescu, NI

Auroux, A

机构：

[1] Romanian Acad, Inst Phys Chem, Bucharest 77208, Romania

[2] Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France

来源：

APPLIED SURFACE SCIENCE | 2000年 / 153卷 / 04期

关键词：

AC electrical conductivity; TG-DSC; Pt/gamma-Al2O3; gamma-Al2O3; protonic conduction; hydrogen spillover;

D O I：

10.1016/S0169-4332(99)00348-7

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：

Changes of electrical properties of a 0.5% Pt/Al2O3 catalyst and of gamma-Al2O3 measured in situ during temperature programmed hydration/dehydration have been correlated with TG-DSC data, obtained in similar conditions. The results are explained in terms of hydrogen spillover to the support facilitated by the presence of traces of water (protonic conduction by "vehicle'' mechanism). (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：218 / 222

页数：5

共 24 条

[1] REACTIVITY OF SPILLOVER HYDROGEN - REACTIVITY OF UNSATURATED-COMPOUNDS [J].