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Infinite dilution activity coefficients and gas-to-liquid partition coefficients of organic solutes dissolved in 1-sec-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and in 1-tert-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide |
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| Authors: | Fabrice Mutelet Gary A Baker Sudhir Ravula Ellen Qian Lainey Wang |
| Institution: | 1. Ecole Nationale Supérieure des Industries Chimiques, Laboratoire Réactions et Génie des Procédés (UMR CNRS 7274), Université de Lorraine, Nancy, France;2. Department of Chemistry, University of Missouri-Columbia, Columbia, MO, USA;3. Department of Chemistry, 1155 Union Circle #305070, University of North Texas, Denton, TX, USA |
| Abstract: | Inverse gas chromatography was used to measure infinite dilution activity coefficients and gas-to-liquid partition coefficients for 48 organic solute probes in either 1-sec-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-tert-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide in the temperature range from 323.15 to 373.15 K. Partial molar excess enthalpies of solution were calculated from the variation of the infinite dilution activity coefficients with temperature. Abraham model correlations were also derived from the experimental partition coefficient data. The derived Abraham model correlations describe the observed partition coefficients to within 0.11 log units. |
| Keywords: | Ionic liquid solvents infinite dilution activity coefficients gas-to-liquid partition coefficients partial molar excess Gibbs energy partial molar excess enthalpy |