高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (8): 1860.

• 研究论文 • 上一篇    下一篇

1-烷基-3-甲基咪唑硫酸氢盐系列离子液体的热力学性质

徐智策1,2,王建英2,王晓玲2,胡永琪1,2   

  1. 1. 天津大学化工学院, 天津 300072;
    2.  河北科技大学化学与制药工程学院, 石家庄 050018
  • 收稿日期:2010-09-07 修回日期:2010-11-26 出版日期:2011-08-10 发布日期:2011-07-19
  • 通讯作者: 胡永琪 E-mail:huyq@hebust.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:  20776037)资助.

Thermodynamic Properties of a Series of Closely Related Ionic Liquids Based on 1-Alkyl-3-methylimidazolium Hydrosulfate

XU Zhi-Ce1,2, WANG Jian-Ying2, WANG Xiao-Ling2, HU Yong-Qi1,2*   

  1. 1. The School of Chemical Engineering,  Tianjin University, Tianjin  300072, China;
    2.  The School of Chemical and Pharmaceutical Engineering,   Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2010-09-07 Revised:2010-11-26 Online:2011-08-10 Published:2011-07-19
  • Contact: HU Yong-Qi E-mail:huyq@hebust.edu.cn
  • Supported by:

    国家自然科学基金(批准号:  20776037)资助.

摘要: 在293.15~343.15 K温度范围内,用MYX-1密度计测定了系列离子液体 1-丁基-3-甲基咪唑硫酸氢盐[C4mim]HSO4 (1-butyl-3-methylimdazolium hydrosulfate)、1-己基-3-甲基咪唑硫酸氢盐[C6mim]HSO4 (1-hexyl-3-methylimdazolium hydrosulfate)、1-辛基-3-甲基咪唑硫酸氢盐[C8mim]HSO4 (1-octyl-3-methylimdazolium hydrosulfate)、1-癸基-3-甲基咪唑硫酸氢盐[C10mim]HSO4 (1-decyl-3-methylimdazolium hydrosulfate)的密度。利用不同温度下的密度值计算得出了离子液体的热膨胀系数及分子体积。利用Glasser经验方程计算了离子液体的标准熵和晶格能,并进一步对其热力学性质进行了讨论。

关键词: 离子液体, 密度, 热力学性质, Glasser理论

Abstract: The densities of a series of ionic liquids [C4mim]HSO4 (1-butyl-3-methylimdazolium hydrosulfate), [C6mim]HSO4 (1-hexyl-3-methylimdazolium hydrosulfate), [C8mim]HSO4 (1-octyl-3-methylimdazolium hydrosulfate) and [C10mim]HSO4 (1-decyl-3-methylimdazolium hydrosulfate) were determined from T = (293.15 to 343.15) K. The coefficients of thermal expansion and molecular volume of the ionic liquids were calculated from the density results. Standard entropies and lattice energy of the IL were calculated from the experimental density values using Glasser’s equation. The thermodynamic properties of the ionic liquid were further discussed.

Key words: Ionic liquid, Density, Thermodynamics property, Glasser theory

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