咪唑类氟硼酸盐型离子液体萃取烃类和噻吩类化合物的选择性  

Selectivity of ionic liquids in extraction of thiophenens and hydrocarbons

作　　者：吴佳[1] 马传彦[1] 葸雷[1] 彭朴[1] 

机构地区：[1]中国石油化工股份有限公司石油化工科学研究院,北京100083

出　　处：《现代化工》2007年第S2期275-278,共4页Modern Chemical Industry

基　　金：国家重点基础研究发展规划项目(973)项目(2006CB202507)

摘　　要：离子液体的选择性是作为柴油脱硫萃取剂的重要指标。本文介绍了测定离子液体在噻吩类硫化物和芳烃中的分配系数KS和KH的方法,并将测定结果与前人的测定结果做了归纳和对比,最后根据本文提出的KS/KH值,从3种具有代表性的离子液体[BMIM][OcSO4]、[BMIM][BF4]和[HMIM][BF4]中选择了[HMIM][BF4]作为生化脱硫预浓缩用萃取剂。The selectivity is a key factor for the extraction of thiophenes in diesel with ionic liquids.In this paper a method to determine the partition coefficients KS and KH are introduced.The partition coefficients and solubilities of ionic liquids in different kinds of oil phases are summarized.Based on the determined KS/KH proposed in this paper the is selected for the pre-extraction before bio-desufurization(BDS) to concentrate the thiophenes in the BDS feed.

关 键 词：离子液体 萃取 脱硫 分配系数 溶解度 

分 类 号：TQ252.3[化学工程—有机化工]