Citation: NING Hui, HOU Min-Qiang, MEI Qing-Qing, YANG De-Zhong, HAN Bu-Xing. Phase Behaviors of 1-Butyl-3-methylimidazolium Hexafluorophosphate+Water+Alcohol Systems[J]. Acta Physico-Chimica Sinica doi: 10.3866/PKU.WHXB201301314 shu

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

1.
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

Received Date: 11 December 2012
Available Online: 31 January 2013
Fund Project: 国家自然科学基金(20903109, 21073207)资助项目 (20903109, 21073207)

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.
- Ionic liquid,
- Water,
- Alcohol,
- Phase behavior,
- Co-solvent effect
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