Abraham model ion-specific equation coefficients for the 1-butyl-2,3-dimethyimidazolium and 4-cyano-1-butylpyridinium cations calculated from measured gas-to-liquid partition coefficient data
Amber Lu, Bihan Jiang, Sarah Cheeran
Mar 4, 2017
Citations
8
Citations
Journal
Physics and Chemistry of Liquids
Full text
Semantic Scholar
Key Takeaway Key Takeaway: The Abraham model correlations accurately describe solute transfer properties in anhydrous 1-butyl-3-methylimidazolium dicyanamide, 1-butyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide, and 4-cyano-1-
Abstract
ABSTRACT Partition coefficient and gas solubility data have been assembled from the published chemical and engineering literature for solutes dissolved in anhydrous 1-butyl-3-methylimidazolium dicyanamide, 1-butyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide, and 4-cyano-1-butylpyrridinium bis(trifluoromethylsulfonyl)imide. More than 60 experimental data points were gathered for each IL solvent. The compiled experimental data were used to derive Abraham model correlations for describing the solute transfer properties into the three anhydrous IL solvents from both the gas phase and water. The derived mathematical correlations described the observed solute transfer properties, expressed as the logarithm of the water-to-IL partition coefficient and logarithm of the gas-to-IL solvent partition coefficient, to within standard deviations of 0.125 log units (or less). Abraham model ion-specific equation coefficients are also calculated for the 1-butyl-2,3-dimethylimidazolium and 4-cyano-1-butylpyridinium cations.