欢迎访问过程工程学报, 今天是

›› 2012, Vol. 12 ›› Issue (1): 87-91.

• 过程与工艺 • 上一篇    下一篇

氯铝酸盐离子液体催化苯与2-氯丙烷烷基化制异丙苯

谢方明 罗国华1 徐新 陈晗   

  1. 北京石油化工学院化工系 北京石油化工学院化工系 北京石油化工学院化工系 北京化工大学化工学院
  • 收稿日期:2011-08-30 修回日期:2011-12-09 出版日期:2012-02-20 发布日期:2012-02-20
  • 通讯作者: 谢方明

Alkylation of Benzene with 2-Chloropropane to Prepare Cumene with Chloroaluminate Ionic Liquids as Catalyst

XIE Fang-ming LUO Guo-hua XU Xin CHEN Han   

  1. Department of Chemical Engineering, Beijing Institute of Petrochemical Technology Dept. Chem. Eng., Beijing Inst. Petrochem. Technol. Department of Chemical Engineering , Beijing Institute of Petrochemical Technology College of Chemical Engineering, Beijing University of Chemical Technology
  • Received:2011-08-30 Revised:2011-12-09 Online:2012-02-20 Published:2012-02-20
  • Contact: XIE Fang-ming

摘要: 以2-氯丙烷为烷基化剂,在[Et3NH]Cl-2AlCl3离子液体作用下催化合成异丙苯. 考察了苯/2-氯丙烷摩尔比、离子液体加入量和反应温度对烷基化反应的影响,同时考察了离子液体的重复使用性. 结果表明,苯/2-氯丙烷摩尔比3.3、离子液体加入量为苯质量的10%、反应温度55℃的条件下,苯转化率为29.38%,异丙苯选择性为90.60%,离子液体循环使用5次,苯转化率和异丙苯选择性未明显下降. 该反应遵循Lewis酸催化机理.

关键词: 离子液体, 氯铝酸盐, 苯, 烷基化, 异丙苯

Abstract: [Et3NH]Cl-2AlCl3 ionic liquid was used to catalyze the alkylation reaction of benzene and 2-chloropropane to prepare cumene. The effects of reaction conditions were investigated. The results showed that under the optimal conditions of molar ratio of benzene to 2-chloropropane were 3.3, amount of catalyst 10% of benzene mass, and reaction temperature 55℃, the conversion rate of benzene could reach 29.38% and the selectivity of cumene was 90.60%. The [Et3NH]Cl-2AlCl3 ionic liquid could be recycled for 5 times.

Key words: ionic liquid, chloroaluminate, benzene, alkylation, cumene

中图分类号: