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Citation: . Determination of Thermodynamic Parameters of Organic Solvents in Ionic Liquid 1-Butyl-3-methylimidazolium Hexafluorophosphate by Inverse Gas Chromatography[J]. Chinese Journal of Applied Chemistry, ;2017, 34(7): 824-832. doi: 10.11944/j.issn.1000-0518.2017.07.160423 shu

Determination of Thermodynamic Parameters of Organic Solvents in Ionic Liquid 1-Butyl-3-methylimidazolium Hexafluorophosphate by Inverse Gas Chromatography

Received Date: 21 October 2016
Revised Date: 13 December 2016
Accepted Date: 23 January 2017

Fund Project: the National Natural Science Foundation of China 21566036the National Natural Science Foundation of China 21366029

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Thermodynamic parameters of eighteen kinds of organic solvents in ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate([BMIM]PF₆) were determined by inverse gas chromatography(IGC) from 343.15 to 373.15 K. The molar enthalpy of sorption, mass fraction activity coefficient, Flory-Huggins interaction parameter, partial molar enthalpy of mixing, and activity coefficient at infinite dilution, were calculated to determine the interactions between [BMIM]PF₆ and selected solvents at the indicated temperature range. n-Alkanes, cyclohexane, tetrahydrofuran, ether, and carbon tetrachloride were found to be poor solvents for [BMIM]PF₆, while benzene, toluene, m-xylene, dichloromethane, acetone, chloroform, ethyl acetate, methyl acetate, ethanol, and carbinol were favorable solvents for this ionic liquid.
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