1-丁基-3-甲基咪唑六氟磷酸盐+水+醇体系的相行为

在298.15 K, 常压下研究了1-丁基-3-甲基咪唑六氟磷酸盐(bmim]PF₆])+水+甲醇、bmim]PF₆]+水+乙醇、bmim]PF₆]+水+2-丙醇、bmim]PF₆]+水+1-丙醇三元体系的相行为. 结果表明, 对于含甲醇、乙醇和2-丙醇的体系, 醇在水+醇溶液中摩尔分数分别为0.55-1.00、0.40-0.75 和0.35-0.50 时, 醇的水溶液与bmim]PF₆]可以互溶. 而水+1-丙醇体系没有此类现象. 这说明, 这类三元系的相行为不但取决于醇分子的大小, 而且取决于其结构.

Phase Behaviors of 1-Butyl-3-methylimidazolium Hexafluorophosphate+Water+Alcohol Systems

The phase behaviors of 1-butyl-3-methylimidazolium hexafluorophosphate (bmim] PF₆]) + water+methanol, bmim]PF₆]+water+ethanol, bmim]PF₆]+water+2-propanol, and bmim]PF₆]+water+1- propanol ternary systems were determined at 298.15 K and ambient pressure. It was demonstrated that when the mole fractions of the alcohols in the water+alcohol solutions were 0.55-1.00, 0.40-0.75, and 0.35-0.50 for methanol, ethanol, and 2-propanol, respectively, the bmim]PF₆] was totally dissolved in the aqueous alcohol solutions due to a strong co-solvent effect. However, water+1-propanol did not exhibit this kind of behavior. Both the size and structure of the alcohols significantly affected the phase behaviors of the ternary systems.