Mode of action of oxidation-active centres in Mo-V mixed oxides on the partial oxidation of an unsaturated aldehyde

被引：23
作者：
Vogel, H
Böhling, R
Hibst, H
机构：
[1] Darmstadt Univ Technol, Inst Chem Technol, Dept Chem, D-64287 Darmstadt, Germany
[2] BASF AG, D-67056 Ludwigshafen, Germany
来源：
CATALYSIS LETTERS | 1999年 / 62卷 / 01期
关键词：
selective oxidation; molybdates; vanadates; acrolein; acrylic acid; temperature-programmed methods; concentration-programmed methods;
D O I：
10.1023/A:1019014114897
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 mode of action of the oxidation-active centres in Mo-V mixed oxides on the selective oxidation of an unsaturated aldehyde was investigated by non-steady-state methods. Various oxidation-active centres, differing in activity and selectivity, were identified by non-steady-state methods. In addition, the influence of the crystallinity of the Mo-V mixed oxides on the activity and selectivity properties were investigated. It was shown that, in contrast to crystalline samples, only X-ray-amorphous Mo-V mixed oxides contained selective oxidation centres. The measurements were used to derive a model based on the interaction of active centres with various redox properties.
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收藏
页码：71 / 78
页数：8
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