Correlation of the solubilizing abilities of 1-butyl-1-methyl-pyrrolidinium tris(pentafluoroethyl)trifluorophosphate, 1-butyl-1-methylpyrrolidinium triflate and 1-methoxyethyl-1-methylmorpholinium tris(pentafluoroethyl) trifluorophosphate

摘要

Chromatographic retention data were measured for a wide range of organic solutes on 1-butyl-1-methylpyrolidinium tris(pentafluoroethyl)trifluorophosphate ([BMPyrr]~+[FAP]~-), 1-butyl-1-methylpyrrolidinium triflate, ([BMPyrr]~+[Trif]~-), and 1-methoxyethyl-1- methylmorpholinium tris(pentafluoroethyl)trifluorophosphate, ([MeoeMMorp] ~+[FAP]~-), stationary phases at (323, 353 and 383) K. The measured retention factors were combined with published infinite dilution activity coefficient and gas-to-water partition coefficient data to yield gas-to-anhydrous ionic liquid (IL) and water-to-anhydrous IL partition coefficients. The three sets of partition coefficients were analyzed using the Abraham model. The derived Abraham model correlations describe the observed gas-to-IL (log_(10) K) and water-to-IL (log_(10) P) partition coefficient data to within average standard deviations of about 0.11 and 0.15 log10 units, respectively.