Oxidative Dehydrogenation of n-Butane: Activity and Kinetics Over VOx/Al2O3 Catalysts

被引:16
|
作者
Madaan, Neetika [1 ]
Haufe, Rommy [2 ]
Shiju, N. Raveendran [1 ]
Rothenberg, Gadi [1 ]
机构
[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1098 XH Amsterdam, Netherlands
[2] LANXESS Deutsch GmbH, D-51369 Leverkusen, Germany
关键词
Heterogeneous catalysis; Butadiene; Olefins; Factorial design; Vanadium;
D O I
10.1007/s11244-014-0317-1
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The catalytic activity of a VOx/Al2O3 catalyst for the oxidative dehydrogenation of n-butane is investigated. The effects of reaction temperature, oxygen to n-butane ratio and GHSV on the catalytic performance are examined and optimized. Interestingly, this simple catalyst gives good conversion and selectivity. Butane was 22-24 %, and the selectivity to C-4 alkenes was 56 %, of which 20-22 % to 1,3-butadiene. Moreover, the catalyst is stable for at least 72 h on stream. Kinetic studies show that the activation barriers for the formation of (butene + butadiene), CO and CO2 amount to 70.2, 65 and 81.3 kJ/mol respectively.
引用
收藏
页码:1400 / 1406
页数:7
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