V-Mg-O prepared via a mesoporous pathway: a low-temperature catalyst for the oxidative dehydrogenation of propane to propene

被引：22

作者：

Chao, ZS ^{[1
]}

Ruckenstein, E ^{[1
]}

机构：

[1] SUNY Buffalo, Dept Chem Engn, Amherst, NY 14260 USA

来源：

CATALYSIS LETTERS | 2004年 / 94卷 / 3-4期

关键词：

mesoporous; vanadium; magnesium; catalyst; oxidative dehydrogenation; propane; propene;

D O I：

10.1023/B:CATL.0000020576.75053.96

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 oxidative dehydrogenation of propane was investigated in a fixed-bed tubular flow reactor at 350 and 450 degreesC over V-Mg-O catalysts prepared via a solid reaction ( the mix-VMg catalysts) or from mesoporous precursors ( the meso-VMg catalysts). Significantly higher selectivities and yields to propene were obtained over the meso-VMg catalysts than over the mix-VMg ones. The cooperation between a much higher BET specific surface area and a novel phase, a highly dispersed-Mg-in-V2O3, is suggested as responsible for the higher ODP performance of the meso-VMg catalysts than of the mix-VMg ones.

引用

页码：217 / 221

页数：5

共 23 条

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