Abstract
Inverse gas-liquid chromatography has been used to measure infinite dilution activity coefficients and gas-to-ionic liquid partition coefficients for a chemically diverse set of organic solutes dissolved in 1-benzyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-benzyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-cyclohexylmethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and N-cyclohexylmethylpyridinium bis(trifluoromethylsulfonyl)imide ionic liquids in the temperature range from 323.15K to 373.15K. The measured experimental data were extrapolated to 298.15K and the resulting values correlated mathematically with the Abraham solvation parameter model. The derived Abraham model correlations rigorously describe the experimental partition coefficient data to within 0.14 (or fewer) log units.
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