石油化工2025，Vol.54Issue(9)：1242-1247,6.DOI:10.3969/j.issn.1000-8144.2025.09.003
液相烷基化制仲丁基苯
Preparation of sec-butylbenzene by liquid-phase alkylation
胥明 1王闻年 1高焕新 1魏一伦 1井萌萌 1李堃1
作者信息
- 1. 中石化(上海)石油化工研究院有限公司,上海 201208
- 折叠
摘要
Abstract
The SRZ-21 molecular sieve was prepared by the hydrothermal crystallization method.Catalyst MBu-01 and MBu-02 were prepared by mixing the SRZ-21 molecular sieve with pseudo boehmite.By employing MBu-01 as the alkylation catalyst,the alkylation reaction of benzene and butylene was studied,and the transalkylation reaction of di-sec-butylbenzene(DSBB)was investigated by adopting MBu-02 as the transalkylation catalyst.The experimental results show that in the alkylation reaction,reducing the benzene/butene molar ratio will decrease the selectivity of sec-butylbenzene(SBB),and excessively high reaction temperature will lead to an increase in the content of impurity tert-butylbenzene.In the conditions of benzene/butene molar ratio of 1.8-3.0,reaction temperature of 140-160℃,butene WHSV of 0.6-1.0 h-1,and pressure of 2.0 MPa,the butene conversion is more than 99%,the SBB selectivity reaches over 90%,and the content of tert-butylbenzene is about 0.04%(w).In the transalkylation reaction,under reaction temperature of 180-200℃and DSBB WHSV of 1.0-2.0 h-1,the DSBB conversion is 50%-70%,and the content of impurity tert-butylbenzene is below 0.10%(w).关键词
丁烯/苯/烷基化/仲丁基苯/分子筛Key words
butene/benzene/alkylation/sec-butylbenzene/molecular sieve分类
化学化工引用本文复制引用
胥明,王闻年,高焕新,魏一伦,井萌萌,李堃..液相烷基化制仲丁基苯[J].石油化工,2025,54(9):1242-1247,6.
