[Hmim]BF4的合成及其萃取性能研究  

Synthesis of [Hmim]BF4 and Its Extraction Performance

作　　者：范俊刚 吴雪 王欢 李文秀 FAN Jun-gang;WU Xue;WANG Huan;LI Wen-xiu(Liaoning Province Key Laboratory of Chemical Separation Technology,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学辽宁省化工分离技术重点实验室,沈阳110142

出　　处：《当代化工》2022年第4期774-777,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金资助项目(项目编号:21576166);辽宁省教育厅科学研究经费项目(项目编号:LJ2020003)。

摘　　要：选择两步法合成1-己基-3-甲基咪唑四氟硼酸盐离子液体([Hmim]BF_(4)),利用红外光谱法表征其结构特性。考察制得该咪唑类离子液体对溶液中微量物质的萃取分离性能,分别考察了[Hmim]BF_(4)作为萃取剂对燃油中含硫化合物苯并噻吩(BT)及废水中重金属离子Cu^(2+)的萃取效果,并探讨了萃取性能的影响因素。结果表明:[Hmim]BF_(4)萃取苯并噻吩的效果受剂油比、萃取温度和萃取时间的影响,当剂油比为1∶2、温度35℃、萃取时间50 min时的萃取效果最好;[Hmim]BF_(4)萃取Cu^(2+)的效果受溶液中金属离子初始质量浓度、萃取温度和萃取时间影响,当溶液中Cu^(2+)初始质量浓度为2 g·L^(-1)、温度为35℃、萃取时间40 min时的萃取效果最好。Imidazolium ionic liquids [Hmim]BFwas synthesized by two-step method, and characterized by FT-IR.The extraction performances for trace impurities separation in solution of the ionic liquid were studied. The influencing factors of ionic liquids in the separation of sulfur-containing compounds benzothiophene (BT)and metal ions Cuwere investigated. Experimental results showed that, the performance of [Hmim]BFon the extraction of benzothiophene was affected by extractant-oil ratio, extraction temperature and extraction time. When the ratio of extractant to oil was 1∶2,the reaction temperature was 35 ℃, and the reaction time was 50 min, [Hmim]BFhad the best extraction performance. The effect of [Hmim]BFextracting Cuwas affected by the initial mass concentration of Cuin the solution, extraction temperature and extraction time. When the initial mass concentration of Cuwas2 g·L, the extraction temperature was 35 ℃, and the extraction time was 40 min, the extraction effect of [Hmim]BFwas the best.

关 键 词：萃取剂 离子液体 苯并噻吩 金属离子 

分 类 号：TQ028.32[化学工程]