中文摘要：

在298.15K,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.

英文摘要：

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＋1propanol 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.