Oxydehydrogenation of propane catalyzed by V-Si-O cogels: enhancement of the selectivity to propylene by operation under cyclic conditions

被引：40
作者：
Ballarini, N
Cavani, F
Ferrari, M
Catani, R
Cornaro, U
机构：
[1] Univ Bologna, Dipartimento Chim Ind & Mat, I-40136 Bologna, Italy
[2] INSTM, Res Unit Bologna, Bologna, Italy
[3] Snamprogetti SpA, I-20097 San Donato Milanese, Italy
来源：
JOURNAL OF CATALYSIS | 2003年 / 213卷 / 01期
关键词：
oxydehydrogenation of propane; vanadia-silica cogels; redox decoupling; propylene;
D O I：
10.1016/S0021-9517(02)00015-5
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 selectivity to propylene in the oxydehydrogenation of propane is improved when the reaction is carried out under cyclic, redox-decoupled conditions rather than under stationary, co-feeding conditions, and using vanadium oxide dispersed in silica as the catalyst. However, the improvement in selectivity is possible only in samples having a V content which is lower than 10 wt% V2O5. This points out the importance of having dispersed vanadium oxide to limit the consecutive combustion of propylene. (C) 2003 Elsevier Science (USA). All rights reserved.
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收藏
页码：95 / 102
页数：8
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