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›› 2010, Vol. 10 ›› Issue (4): 788-794.

• 材料工程专栏 • 上一篇    下一篇

磁性离子液体1-甲基-3-烷基咪唑四卤化铁盐的合成及其物性表征

李小华 杨富明 周清 张锁江   

  1. 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所
  • 收稿日期:2010-05-25 修回日期:2010-06-22 出版日期:2010-08-20 发布日期:2010-08-20
  • 通讯作者: 李小华

Synthesis and Properties of 1-Methyl-3-Alkylimidazolium Tetrahalogenoferrate Magnetic Ionic Liquids

LI Xiao-hua YANG Fu-ming ZHOU Qing ZHANG Suo-jiang   

  1. Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, CAS
  • Received:2010-05-25 Revised:2010-06-22 Online:2010-08-20 Published:2010-08-20
  • Contact: LI Xiao-hua

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被引次数

42

摘要： 合成了4种1-甲基-3-烷基咪唑四氯化铁盐[Cnmim]FeCl4(n=2, 4, 6, 8)及3种1-甲基-3-丁基咪唑四卤化铁([C4mim]FeX4, X=Cl, Br)磁性离子液体，光谱结果表明，[Cnmim]FeCl4及[C4mim]FeBr4中阴离子单一，而[C4mim]FeClBr3及[C4mim]FeCl3Br中的阴离子为FeBr4-, FeBr3Cl-, FeCl2Br2-, FeCl3Br-, FeCl4-的混合物. 测定了其密度、粘度、电导率，磁性离子液体密度较大，25℃时为1.25~1.94 g/cm3；粘度较小，25℃时为21~65 mPa×s；电导率较大，30℃时为0.23~1.37 S/m. 并研究了其物性随温度及结构的变化规律.

关键词: 磁性离子液体, 结构, 密度, 粘度, 电导率

Abstract: Seven magnetic ionic liquids of 1-methyl-3-alkylimidazolium tetrachloroferrate [Cnmim]FeCl4 (n=2, 4, 6, 8) and 1-methyl-3-butylimidazolium tetrahalogenoferrate [C4mim]FeX4 (X=Cl, Br) were synthesized and verified with 1H-NMR, Raman and MS spectra. [Cnmim]FeCl4 and [C4mim]FeBr4 had single anions, but [C4mim]FeClBr3 and [C4mim]FeCl3Br had multi-anions, including FeBr4-, FeBr3Cl-, FeCl2Br2-, FeCl3Br- and FeCl4-. The density, viscosity and conductivity of magnetic ionic liquids were measured. It was found that their densities were bigger than those of traditional ionic liquids, 1.25~1.94 g/cm3 at 25℃; viscosities were lower, 21~65 mPa×s at 25℃; conductivities were higher, 0.23~1.37 S/m at 30℃. The influences of temperature and structure of cations and anions on the above properties were extensively investigated.

Key words: magnetic ionic liquid, structure, density, viscosity, conductivity

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