SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (11): 1497-1504.DOI: 10.1016/j.cjche.2016.03.005

• 第25届中国过程控制会议专栏 •    下一篇

Research progress in ionic liquids catalyzed isobutane/butene alkylation

Panxue Gan, Shengwei Tang   

  1. Multi-phase Mass Transfer and Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • 收稿日期:2016-01-14 修回日期:2016-03-07 出版日期:2016-11-28 发布日期:2016-12-06
  • 通讯作者: Shengwei Tang
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21276163, 21576168).

Research progress in ionic liquids catalyzed isobutane/butene alkylation

Panxue Gan, Shengwei Tang   

  1. Multi-phase Mass Transfer and Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • Received:2016-01-14 Revised:2016-03-07 Online:2016-11-28 Published:2016-12-06
  • Contact: Shengwei Tang
  • Supported by:

    Supported by the National Natural Science Foundation of China (21276163, 21576168).

摘要: The complicated reaction mechanismand the character of competitive reactions lead to a stringent requirement for the catalyst of C4 alkylation process. Due to their unique properties, ionic liquids (ILs) are thought to be new potential acid catalysts for C4 alkylation. An analysis of the regular and modified chloroaluminate ILs, novel Brønsted ILs and composite ILs used in isobutane/butene alkylation shows that the use of either ILs or ILs coupled with mineral acid as homogeneous catalysts can help to greatly adjust the acid strength. Bymodifying the structural parameters of the cations and anions of the ILs, the solubility of the reactants could also be adjusted, which in turn displays a positive effect on improving the activity of ILs. Immobilization of ILs is an effectiveway to modulate the surface adsorption/desorption properties and acid strength distribution of the solid acid catalysts. Such a process has a tremendous potential to reduce the deactivation of catalyst and enhance the activity of the solid acid catalyst. The development of novel acid catalysts for C4 alkylation is a comprehensive consideration of acid strength and its distribution, interfacial properties and transport characteristics.

关键词: Alkylation, Isobutane, Butenen, Catalyst, Ionic liquid

Abstract: The complicated reaction mechanismand the character of competitive reactions lead to a stringent requirement for the catalyst of C4 alkylation process. Due to their unique properties, ionic liquids (ILs) are thought to be new potential acid catalysts for C4 alkylation. An analysis of the regular and modified chloroaluminate ILs, novel Brønsted ILs and composite ILs used in isobutane/butene alkylation shows that the use of either ILs or ILs coupled with mineral acid as homogeneous catalysts can help to greatly adjust the acid strength. Bymodifying the structural parameters of the cations and anions of the ILs, the solubility of the reactants could also be adjusted, which in turn displays a positive effect on improving the activity of ILs. Immobilization of ILs is an effectiveway to modulate the surface adsorption/desorption properties and acid strength distribution of the solid acid catalysts. Such a process has a tremendous potential to reduce the deactivation of catalyst and enhance the activity of the solid acid catalyst. The development of novel acid catalysts for C4 alkylation is a comprehensive consideration of acid strength and its distribution, interfacial properties and transport characteristics.

Key words: Alkylation, Isobutane, Butenen, Catalyst, Ionic liquid