物理化学学报 >> 2016, Vol. 32 >> Issue (3): 617-623.doi: 10.3866/PKU.WHXB201512171

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1-丁腈-3-甲基咪唑双三氟甲基磺酸亚胺的性质

刘青山1,*(),刘惠2,3,牟林1,*()   

  1. 1 沈阳农业大学理学院, 沈阳 110866
    2 上海环境卫生工程设计院有限公司, 上海 200232
    3 上海污染场地修复工程技术研究中心, 上海 200232
  • 收稿日期:2015-08-03 发布日期:2016-03-04
  • 通讯作者: 刘青山,牟林 E-mail:liuqingshan@dicp.ac.cn;myname-mulin@tom.com
  • 基金资助:
    国家自然科学基金(21203193);辽宁省高等学校优秀人才支持计划(LJQ2015099)

Properties of 1-(Cyanopropyl)-3-methylimidazolium Bis[(trifluoromethyl)sulfonyl]imide

Qing-Shan LIU1,*(),Hui LIU2,3,Lin MOU1,*()   

  1. 1 School of Science, Shenyang Agricultural University, Shenyang 110866, P. R. China
    2 Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd., Shanghai 200232, P. R. China
    3 Shanghai Engineering Research Center of Contaminated Sites Remediation, Shanghai 200232, P. R. China
  • Received:2015-08-03 Published:2016-03-04
  • Contact: Qing-Shan LIU,Lin MOU E-mail:liuqingshan@dicp.ac.cn;myname-mulin@tom.com
  • Supported by:
    the National Natural Science Foundation of China(21203193);Program for Liaoning Excellent Talents in University, China(LJQ2015099)

摘要:

制备了功能化离子液体1-丁腈-3-甲基咪唑双三氟甲基磺酸亚胺。在T为283.15-353.15 K温度范围内,测定了该功能化离子液体的密度、动力粘度、电导率及折光率。讨论了亚甲基的增减对该类功能化离子液体的密度、动力粘度、电导率及折光率等性质的影响,并与传统咪唑类、吡啶类离子液体物理化学性质的变化趋势进行了对比。通过经验方程计算了该功能化离子液体的热膨胀系数、分子体积、标准摩尔熵及晶格能等热力学性质参数。讨论了Vogel-Fulcher-Tamman (VFT)方程和Arrhenius方程的适用性,得出VFT方程适用于该功能化离子液体,而Arrhenius方程并不适用。有关研究对新型离子液体的合成及其工业化的应用具有十分重要的意义。

关键词: 功能化离子液体, 密度, 动力粘度, 电导率, 折光率

Abstract:

The functional ionic liquid (FIL) 1-(cyanopropyl)-3-methylimidazolium bis[(trifluoromethyl)sulfonyl] imide [PCNMIM][NTf2] was synthesized using an ion-exchange method. Density, dynamic viscosity, electrical conductivity, and refractive index were determined in the temperature range 283.15-353.15 K. The effect of methylene group introduction is discussed for the FILs and imidazolium ionic liquids (ILs). The thermal expansion coefficient, molecular volume, standard molar entropy, and lattice energy were determined by the empirical equations from the measurement values. The temperature dependence on electrical conductivity and dynamic viscosity of the FILs were fitted by the Vogel-Fulcher-Tammann (VFT) equation. The adaptability of the Arrhenius equation was also discussed for the electrical conductivity and dynamic viscosity. The study of the thermodynamic properties of the FIL is important for synthesis of new ILs and their application.

Key words: Functional ionic liquid, Density, Dynamic viscosity, Electrical conductivity, Refractive index

MSC2000: 

  • O642