物理化学学报2017，Vol.33Issue(4)：736-744,9.DOI:10.3866/PKU.WHXB201612293
两种疏水型膦类离子液体的密度、动力粘度及电导率
Density, Dynamic Viscosity and Electrical Conductivity of Two Hydrophobic Phosphonium Ionic Liquids
摘要
Abstract
Two air and water stable hydrophobic phosphonium ionic liquids (ILs),tributyl-hexylphosphonium tetrafluoroborate ([P4446][BF4]) and tributyl-hexylphosphonium bis(trifluoromethylsulfonyl)imide ([P4446][NTf2]),were prepared by the traditional method.Their basic physico-chemical properties of density,dynamic viscosity,and electrical conductivity were measured in the temperature range of 283.15-353.15 K.The effect of the temperature and structure of the anion on the thermodynamic properties were discussed.The properties arecompared with the cation structures changing of the phosphonium type ILs.The most important thermodynamic properties for their practical application,such as molecular volume,standard molar entropy,and lattice energy,were calculated from their density using empirical equations.The calculated values were compared with thoseof imdazolium and pyridinium type ILs.Molar electrical conductivity was determined from density and electricalconductivity.The applicability of the VogeI-Fulcher-Tamman (VFT) and Arrhenius equations to the fitting of thedynamic viscosity and electrical conductivity was validated.The activation of the electrical conductivity and dynamic viscosity were obtained from the final VFT equation.According to the Walden rule,the density,dynamic viscosity,and electrical conductivity were described by the Walden equation.The results are very important for academic studies as well as industrial applications of these ILs.关键词
离子液体/密度/动力粘度/电导率/Walden规则Key words
Ionic liquids/Density/Dynamic viscosity/Electrical conductivity/Walden rule分类
化学化工引用本文复制引用
郑其格,刘惠,夏泉,刘青山,牟林..两种疏水型膦类离子液体的密度、动力粘度及电导率[J].物理化学学报,2017,33(4):736-744,9.基金项目
The project was supported by the Program for Liaoning Excellent Talents in University,China (LJQ2015099).辽宁省高等学校优秀人才支持计划(LJQ2015099)资助项目 （LJQ2015099）
