1-丁基-3-甲基咪唑六氟磷酸盐＋水＋醇体系的相行为(英文)  

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

作　　者：宁汇[1] 侯民强[1] 梅清清[1] 杨德重[1] 韩布兴[1] 

机构地区：[1]中国科学院化学研究所,中国科学院胶体界面与化学热力学重点实验室,北京分子科学国家实验室,北京100190

出　　处：《物理化学学报》2013年第4期678-682,共5页Acta Physico-Chimica Sinica

基　　金：supported by the National Natural Science Foundation of China(20903109,21073207)~~

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.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.

关 键 词：离子液体 水 醇 相行为 共溶剂效应 

分 类 号：O642.42[理学—物理化学]