je500050p_si_001.pdf (129.08 kB)
Infinite Dilution Activity Coefficients of Solutes Dissolved in Two Trihexyl(tetradecyl)phosphonium Ionic Liquids
journal contribution
posted on 2014-06-12, 00:00 authored by Fabrice Mutelet, Dominique Alonso, Timothy
W. Stephens, William E. Acree, Gary A. BakerInfinite dilution activity coefficients
(γ1,2∞) are reported for 31
and 40 diverse organic solutes dissolved in trihexyl(tetradecyl)phosphonium l-lactate and trihexyl(tetradecyl)phosphonium (1S)-(+)-10-camphorsulfonate, as determined by inverse
gas chromatography at temperatures from 323 K to 373 K. The measured
retention data were further transformed to gas-to-ionic liquid and
water-to-ionic liquid partition coefficients using standard thermodynamic
expressions based upon measured values for corresponding gas-to-water
partition coefficients of the test solutes. Both sets of partition
coefficients were interpreted using an ion-specific equation coefficient
form of the basic Abraham general solvation parameter model. Finally,
ion-specific equation coefficients were calculated for the chiral l-lactate and (1S)-(+)-10-camphorsulfonate
anions.