Oxidative dehydrogenation of n-butane on V/MgO catalysts. Influence of the type of contactor

被引:23
作者
Soler, J
Nieto, JML
Herguido, J
Menendez, M
Santamaria, J [1 ]
机构
[1] Univ Zaragoza, Dept Ingn Quim & TMA, E-50009 Zaragoza, Spain
[2] Univ Politecn Valencia, CSIC, Inst Technol Quim, Valencia 4622, Spain
关键词
oxidative dehydrogenation of n-butane; reactor selection; redox fluidized-bed reactor; vanadium magnesium mixed oxide catalyst;
D O I
10.1023/A:1019086112094
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
A comparative study of the catalytic performance of a selective V-Mg-O catalyst in the oxidative dehydrogenation of n-butane is presented using three different types of reactor: (i) an adiabatic fixed-bed reactor; (ii) a fluidized-bed reactor; and (iii) an in situ redox fluidized-bed reactor. The results obtained indicate that the in situ redox fluidized-bed reactor outperforms the conventional fixed-and fluidized-bed reactors, especially at high n-butane conversions. Thus, a selectivity to C(4) olefins of 54% atn-butane conversions of 60% was achieved at 550 degrees C using an in situ redox fluidized-bed reactor while selectivities to C(4)-olefins lower than 43% were obtained on the other reactor types under the same reaction conditions (isoconversion and reaction temperature).
引用
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页码:25 / 30
页数:6
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