高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1873-1876.

• 研究论文 • 上一篇    下一篇

稀散金属室温离子液体BMIInCl4的性质研究

杨家振1, 张庆国2,3, 黄明1, 薛凤1, 臧树良1   

  1. 1. 中国科学院大连化学物理研究所材料热化学实验室,大连116023;
    2. 南开大学新能源材料化学研究所,天津300071
  • 收稿日期:2004-11-18 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家自然科学基金(批准号:20473036)资助.

Properties of Ionic Liquid BMIInCl4 of Rare Metal at Room Temperature

YANG Jia-Zhen1, ZHANG Qing-Guo2,3, HUANG Ming1, XUE Feng1, ZANG Shu-Liang1   

  1. 1. Institute of Rare Metals,College of Chemistry,Liaoning University,Shenyang 110036,China;
    2. Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China;
    3. Graduate School of Chinese Academy of Sciences,Beijing 100039,China
  • Received:2004-11-18 Online:2005-10-10 Published:2005-10-10

摘要: 在干燥高纯氩气氛的手套箱内,直接将摩尔比为1∶1的高纯无水InCl3与氯化1-甲基-3-丁基咪唑(BM IC l)混合,得到无色透明的离子液体BM IInCl4.在278.15-343.15 K温度范围内测定了该离子液体的密度和表面张力.利用G lasser经验方程和空隙模型讨论了BM IInCl4的性质,并与离子液体BMIAlCl4作了比较,证明了空隙模型具有一定的合理性.

关键词: 离子液体, 密度, 表面张力, InCl3, 空隙模型

Abstract: Recently,ionic liquids(ILs) have received more attention because of their unusual properties and have great potential as "green" solvents for industrial processes.In particular,the ILs based on AlCl3 have been most widely studied.However,there are a limited number of reports of ionic liquids based on elements of group Ⅲ other than aluminum.To expand our knowledge of IL chemistry and as a continuation of our previous investigations this paper reports that an ionic liquid(IL),BMIInCl4,was prepared by directly mixing InCl3 and 1- methyl-3-n-butylimidazolium chloride with molar ratio 1∶1 under dry argon atmosphere.The densities and surface tension of the pure IL were determined in the temperature range from 278.15 to 343.15 K.The properties for the ionic liquid based on group Ⅲ were discussed by using Glasser's theory.The values of volume of anion AlCl-4 and InCl-4 were obtained,respectively.The mean contribution of per methylene((—CH2—)) group to the molecular volume of ionic liquid based on AlCl3 is 0.028 6 nm3 and is in good agreement with the contribution of 0.028 0 nm3 from n-alcohols. And the standard entropy,the surface energy and the crystal energy of the ionic liquid were calculated,respectively.The crystal energy of the ionic liquid is much lower than that of ionic solid and this is the underlying reason for forming ionic liquid at room temperature.In addition,a new theoretical model of ionic liquid,that is an interstice model,was applied to calculating the thermal expansion coefficient of BMIInCl4.And the magnitude order of the thermal expansion coefficient,α,calculated by the theoretical model is in good agreement with the experimental value.The result shows that there is much reasonableness for the interstice model of ionic liquid.

Key words: Ionic liquid, Density, Surface tension, InCl3, Interstice model

中图分类号: