离子液体[Bmim]BF_4合成反应后的纯化工艺  

The purification process of ionic liquid [Bmim]BF_4 after synthesis

作　　者：王国平[1] 刘培元[1] 方伟慧[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362021

出　　处：《化学工程与装备》2008年第3期30-34,共5页Chemical Engineering & Equipment

摘　　要：考察了离子液体[Bmim]BF4(四氟硼酸1-丁基-3-甲基咪唑)合成反应后纯化步骤中CH2Cl2用量、H2O用量及不同萃取水洗方式等因素对[Bmim]BF4得率的影响,得到了纯化时合理的CH2Cl2用量及H2O用量,质量比为:CH2Cl2:H2O:[Bmim]BF4粗品=7:3:10,其中H2O采用多次加入方式进行萃取水洗效果较好、离子液体的得率较高,纯化后[Bmim]BF4得率约为93.15%。Studied ionic liquids [Bmim]BF4 (tetrafluoroborate 1-butyl-3-methylimidazole) after synthesizing, the dosage of CH2Cl2 and H2O, different washing extraction methods and other factors impact on the yield of ionic liquids [Bmim]BF4 during purification process. Acquired more reasonable dosage of CH2Cl2 and H2O during purification process,the mass ratio is:CH2Cl2:H2O:unwashed [Bmim]BF4=7:3:10. Washing with H2O by quomodo of several-times adding and the effect of washing is well, the yield of ionic liquid [Bmim]...

关 键 词：[Bmim]BF 纯化 萃取 水洗 

分 类 号：TQ252.3[化学工程—有机化工]