Studies on the surface oxygen species and the catalytic activity for co oxidation of La1-xSrxCo1-xMnxO3, a perovskite-type oxides catalyst

被引：7
|
作者：
Li, R [1 ]
Ma, JT [1 ]
Xu, JL [1 ]
Zhou, X [1 ]
Su, ZX [1 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2000年 / 70卷 / 02期
关键词：
perovskite-type oxides; surface oxygen distribution; active oxygen species; catalytic oxidation of CO;
D O I：
10.1023/A:1010365622170
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：
The surface oxygen distribution, the active oxygen species for CO on the perovskite-type catalyst La1-xSrxCo1-xMnxO3 and its catalytic oxidation activity with CO as probe were investigated by means of XRD, TPD and XPS in a continuous flow microreactor. Results showed that different adsorbed oxygen species and lattice oxygen were distributed on the catalyst surface. Meanwhile, the surface lattice oxygen of the oxides was reacting in the course of CO oxidation. This leads to the conclusion that, when x=0.6, the catalyst shows the best oxidative activity and lower starting temperature.
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页码：363 / 370
页数：8
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