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.
出处
《现代化工》
CAS
CSCD
北大核心
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)
关键词
离子液体
萃取
脱硫
分配系数
溶解度
ionic liquids
extraction
desulphurization
partition coefficient
solubility
