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.

引用

页码：95 / 102

页数：8

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