Abstract
Some thermodynamic properties for the ionic liquid 1-hexyl-3-methylimidazolium chloride ([HMIM]Cl) were investigated by inverse gas chromatography (IGC) method at temperatures from 343.15K to 373.15K. The thermodynamic parameters, including weight fraction activity coefficient, Flory–Huggins interaction parameter, partial molar enthalpy of mixing, molar enthalpy of sorption, activity coefficient at infinite dilution and solubility parameter, were obtained to judge the interactions between [HMIM]Cl and the selected solvents at the studied temperatures. The results showed that dichloromethane, chloroform, carbon tetrachloride, ethanol, and carbinol were the favorite solvents for [HMIM]Cl, while n-C6 to n-C9, cyclohexane, benzene, toluene, m-xylene, acetone, ethyl acetate, tetrahydrofuran, ether, methyl, and acetate were bad solvents for [HMIM]Cl.
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