摘要
以超声波辅助法合成了氯化1-甲基-3-苄基咪唑离子液体([Bzmim]Cl),并对其结构进行了紫外光谱(UV)和傅里叶红外光谱(FT-IR)表征。考察了反应条件对[Bzmim]Cl收率的影响,实验结果表明超声波强化了离子液体的合成过程,能明显缩短合成时间。[Bzmim]Cl较优的合成条件为超声波功率100 W、反应温度80℃、反应时间1 h、氯苄与1-甲基咪唑物质的量之比值1.1,此时离子液体的收率约为99.8%,纯度为98%。探讨了不同温度下离子液体[Bzmim]Cl对杉木木屑的溶解性能,结果表明活化后的杉木木屑在120℃时溶解度约为5.4。
1-Methyl-3-benzylimidazliu chloride ionic liquid（[Bzmim]Cl） was synthesized by ultrasonic assistance,and its structure was characterized by UV and FT-IR spectra.The influences of the reaction conditions on the yield of Cl were investigated,and the experimental results showed that the application of ultrasonic wave intensified the synthesis process of ionic liquids and reduced the synthesis time.The optimum synthesis condition was obtained as follows： power of ultrasonic wave 100 W,reaction temperature 80 ℃,reaction time 1h and the molar ratio value of benzyl chloride to 1-methylimidazole were 1.1.The yield and purity of the ionic liquid under the optimum condition were 99.8% and 98 %,respectively.The dissolution of the Chinese fir sawdust activated in the ionic liquid was discussed under different temperature,and the solubility of the sawdust is 5.4 at 120 ℃.
出处
《生物质化学工程》
CAS
2010年第5期21-24,共4页
Biomass Chemical Engineering
基金
福建省自然科学基金资助项目(2009J05110)
福建省教育厅科技项目(021984)
关键词
离子液体
超声波
合成
木材
溶解
ionic liquid
ultrasonic wave
synthesis
wood
dissolution
