Density and surface tension of pure ionic liquid 1-butyl-3-methyl-imidazolium L-lactate and its binary mixture with alcohol and water

作者：Jiang Haichao; Zhao Ying; Wang Jianying; Zhao Fengyun; Liu Runjing; Hu Yongqi^*

来源：Journal of Chemical Thermodynamics, 2013, 64: 1-13.

DOI：10.1016/j.jct.2013.04.015

• Ionic liquid
• Binary mixture
• Density
• Surface tension

The density and surface tension of the pure ionic liquid 1-butyl-3-methyl-imidazolium L-lactate were measured from T (293.15 to 343.15) K. The coefficient of thermal expansion, molecular volume, standard entropy, lattice energy, surface entropy, surface enthalpy, and enthalpy of vaporization were calculated from the experimental values. Density and surface tension were also determined for binary mixtures of {1-butyl-3-methyl-imidazolium L-lactate + water/alcohol (methanol, ethanol, and 1-butanol)} systems over the whole composition range from T (298.15 to 318.15) K at atmospheric pressure. The partial molar volume, excess partial molar volume and apparent molar volume of the component IL and alcohol/water in the binary mixtures were discussed as well as limiting properties at infinite dilution and the thermal expansion coefficients of the four binary mixtures. The surface properties of the four binary mixtures were also discussed.

• 出版日期2013-9
• 单位河北大学