Density and surface tension of binary mixtures of 1-ethyl-3-methylimdazolium nitrate with alcohols

作     者：Feng Yun Zhao Li Ya Liang Jian Ying Wang Yong Qi Hu 

作者机构：College of Chemical and Pharmaceutical EngineeringHebei University of Science and TechnologyShijiazhuang 050018China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2012年第23卷第11期

页      面：1295-1298页

核心收录：

学科分类：080705[工学-制冷及低温工程] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(No.20776037) the Natural Science Foundation of Hebei Province(No.B2012208084) 

主　　题：Ionic liquid Density Surface tension Excess molar volume 

摘      要：New experimental data of densities and surface tensions are presented for the binary mixtures of the ionic liquid 1-ethyl-3- methyl imidazolium nitrate （[EMIM]NO3） with methanol and ethanol. Measurements were performed at 298.15 K and atmospheric pressure, covering the whole composition range. Excess molar volumes VE and the surface tension deviations 8y have been determined. For the excess molar volumes of binary mixture, there is a region of negative VE at low IL mole fraction, passing through a minimum and then VE increases and becomes positive, showing maximum at higher IL mole fraction. It is shown that the surface tension deviations ~y of [EMIM]NO3 ＋ methanol system are positive but those of [EMIM]NO3 ＋ ethanol system are negative over the entire mole fraction range.