OXIDATIVE DEHYDROGENATION OF ETHYLBENZENE WITH CARBON-DIOXIDE

被引：174

作者：

SUGINO, MO ^{[1
]}

SHIMADA, H ^{[1
]}

TURUDA, T ^{[1
]}

MIURA, H ^{[1
]}

IKENAGA, N ^{[1
]}

SUZUKI, T ^{[1
]}

机构：

[1] KANSAI UNIV,FAC ENGN,DEPT CHEM ENGN,SUITA,OSAKA 564,JAPAN

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 121卷 / 01期

关键词：

CARBON DIOXIDE; ETHYLBENZENE DEHYDROGENATION; IRON CARBON; LITHIUM;

D O I：

10.1016/0926-860X(95)85015-5

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：

An attempt to use carbon dioxide as a diluent and oxidant in the dehydrogenation of ethlybenzene to styrene was carried out over an activated carbon-supported iron catalyst (Fe 17 wt.-%) at 773-973 K, CO2/ethylbenzene = 50-70 mol/mol and W/F = 30-120 g h/mol. An addition of 20-30 mol-% lithium nitrate to iron resulted in a significant increase in the catalytic activity. The highest yield of styrene (40-45%) with more than 90% selectivity was obtained at a ratio of lithium to iron of 0.1-0.2 (mol/mol). In addition to styrene, carbon monoxide and water were formed as products. This indicated that the reaction proceeds via an oxidative dehydrogenation mechanism. Added lithium nitrate was converted into lithium ferrite during the treatment of an iron-lithium co-loaded activated carbon catalyst under carbon dioxide at 973 K. Lithium ferrite thus formed would be an active center of the reaction.

引用

页码：125 / 137

页数：13

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