Reaction of oxygen with adsorbed hydrogen species of a reduced Pt/TiO2 catalyst

被引：0
|
作者：
Li, XS
Chen, YX
Li, WZ
机构：
[1] State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 1996年 / 58卷 / 02期
关键词：
adsorbed hydrogen; reduced Pt/TiO2 catalyst; TPO;
D O I：
10.1007/BF02067048
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：
Reaction of oxygen with the adsorbed hydrogen species of Pt/TiO2 catalysts reduced in the temperature range of RT-773 K has been studied by temperature-programmed oxidation (TPO). It is obtained that the Pt-assisted reaction of oxygen with both the surface hydroxy groups and titanium hydride species occurs in the temperature range of 320-450 K; direct oxidation of the surface hydrogen species takes place on the surface of TiO2 in the temperature range of 500-600 K; and oxygen reacts with the stored hydrogen species in the sublayer and bulk of the TiO2 support when the temperature was increased to above 600 K.
引用
收藏
页码：385 / 390
页数：6
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