N-乙基-N-丁基吗啉离子液体的合成及性能  

Synthesis and Properties of N-Ethyl-N-butylmorpholine Tetrafluoroborate Ionic Liquid

作　　者：范必威[1] 王军[1] 李明元[2] 郭善[1] 叶文玉[3] 黄在银[2] 

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059 [2]广西大学化学化工学院,广西南宁530004 [3]河南大学化学化工学院,河南开封475002

出　　处：《精细化工》2008年第7期628-630,共3页Fine Chemicals

摘　　要：以吗啉、溴乙烷、溴代正丁烷为原料三步法合成了，N-乙基-N-丁基吗啉四氟硼酸盐离子液体，中间体（a）产率94．1％，（b）产率90．7％，离子液体产率87．6％。这种具有吗啉阳离子的离子液体用质谱、红外光谱、元素分析、核磁共振和热重分析等手段进行了表征，并对产物的溶解性及形成双水相体系条件进行了考察，结果表明：产物在极性溶剂里具有较好的溶解性，当离子液体的质量浓度为345—440g／L、KH2PO4质量浓度85—95g/L、溶液酸度4．5—6．0时，形成上下相体积比接近1的双水相体系，性质稳定。A novel ionic liquid N-ethyl-N-butylmorpholine tetrafluoroborate （[ Nebm ] BF4 ）was prepared in three steps using morpholine, ethyl bromide, and n-butyl bromide as raw materials. Yields of N-ethylmorpholine and N-ethyl-N-butyl morpholine bromide were 94. 1% and 90. 7% respectively. The yield of ionic liquid was 87.6%. The ionic liquid with cationic morpholine was characterized by MS, FT-IR, elementary analysis, NMR and TGA. The solubility and the condition for the formation of aqueous two-phase system of the final product were also studied. The results show that it has good solubility in polar solvent;with[ Nebm] BF4 345 -440 g/L and KH2PO4 85 -90 g/L at pH value 4. 5 - 6.0,the volume ratio of the aqueous two-phase system is 1 and stable.

关 键 词：吗啉 离子液体 双水相体系 功能材料 

分 类 号：O621.3[理学—有机化学]