Pt/Al2O3 and Pt/Ba-Al2O3 catalysts studied by temperature programmed desorption of oxygen:: Evidence for a low temperature desorbing species

被引：9
|
作者：
Labalme, V [1 ]
Guilhaume, N [1 ]
Garbowski, E [1 ]
Primet, M [1 ]
机构：
[1] Univ Lyon 1, CNRS, UMR 5634, LACE, F-69622 Villeurbanne, France
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 1998年 / 64卷 / 02期
关键词：
platinum; alumina; oxygen; desorption;
D O I：
10.1007/BF02475336
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：
For fresh and aged Pt/Al2O3 catalysts, TPD of oxygen is fairly well related to the noble metal surface areas and to the catalytic activity in butane combustion, whereas for aged Pt/Ba-Al2O3 solids, the catalytic activity is still preserved despite a tremendous sintering of the metallic phase and seems to be connected to a surface barium superoxide.
引用
收藏
页码：207 / 214
页数：8
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