物理化学学报 >> 2011, Vol. 27 >> Issue (12): 2762-2766.doi: 10.3866/PKU.WHXB20112762

热力学,动力学和结构化学 上一篇    下一篇

离子液体[Cnpy][NTf2] (n=2, 4, 5)的动力粘度和电导率

刘青山1, 颜佩芳1, 杨淼1, 谭志诚1,2, 李长平1,3, WELZ-BIERMANN Urs1   

  1. 1. 中国科学院大连化学物理研究所, 中国离子液体实验室, 辽宁大连 116023;
    2. 中国科学院大连化学物理研究所, 热化学实验室, 辽宁大连 116023;
    3. 大连大学, 环境与化学工程学院, 辽宁大连 116622
  • 收稿日期:2011-04-20 修回日期:2011-09-21 发布日期:2011-11-25
  • 通讯作者: 谭志诚, 李长平 E-mail:tzc@dicp.ac.cn; licpbit@hotmai.com
  • 基金资助:

    国家自然科学基金(21073189, 21006007, 20901076, 21176033)和中国科学院大连化学物理研究所创新基金(K2009D03)资助项目

Dynamic Viscosity and Conductivity of Ionic Liquids [Cnpy][NTf2] (n=2, 4, 5)

LIU Qing-Shan1, YAN Pei-Fang1, YANG Miao1, TAN Zhi-Cheng1,2, LI Chang-Ping1,3, WELZ-BIERMANN Urs1   

  1. 1. China Ionic Liquid Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, LiaoningProvince, P. R. China;
    2. Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,Dalian 116023, Liaoning Province, P. R. China;
    3. College of Chemical Engineering and the Environment, Dalian University,Dalian 116622, Liaoning Province, P. R. China
  • Received:2011-04-20 Revised:2011-09-21 Published:2011-11-25
  • Contact: TAN Zhi-Cheng, LI Chang-Ping E-mail:tzc@dicp.ac.cn; licpbit@hotmai.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21073189, 21006007, 20901076, 21176033) and Knowledge Innovation Program of DICP, Chinese Academic of Sciences (K2009D03).

摘要: 在298.15-338.15 K和283.15-338.15 K温度范围内, 分别测量了N-烷基吡啶双三氟甲磺酸亚胺(烷基链分别为: 乙基、丁基、戊基)三种疏水型离子液体的动力粘度和电导率. 利用Arrhenius 方程和Fulcher 方程将测量的动力粘度和电导率对温度拟合, 得到了动力粘度和电导率随温度变化方程式. 从电导率和密度计算出了上述三种离子液体在283.15-338.15 K温度范围内的摩尔电导率. 应用Walden 规则, 描述了动力粘度与摩尔电导率之间的关系.

关键词: 离子液体, 动力粘度, 电导率, 摩尔电导率, Walden 规则

Abstract: Experimental dynamic viscosity and conductivity data of the air- and water-stable hydrophobic ionic liquids (ILs) N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([Cnpy][NTf2] n=2, 4, 5) were recorded at temperatures ranging from 298.15 to 338.15 K and from 283.15 to 338.15 K with an interval of 5 K. The dynamic viscosity and conductivity values of the [Cnpy][NTf2] (n=2, 4, 5) ILs were fitted using the Arrhenius equation and the Fulcher equation. The molar conductivity was calculated at temperatures ranging from 283.15 to 338.15 K from the conductivity and density data. The relationship between the dynamic viscosity and the molar conductivity was discussed in terms of Walden's rule.

Key words: Ionic liquids, Dynamic viscosity, Conductivity, Molar conductivity, Walden rule

MSC2000: 

  • O642