Characterization of the solubilizing ability of short-chained glycol-grafted ammonium and phosphonium ionic liquids

Fabrice Mutelet, Caroline Hussard, Gary A. Baker, Hua Zhao, Brittani Churchill, William E. Acree

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Infinite dilution activity coefficients and gas-to-liquid partition coefficients are reported for >40 organic solvents dissolved in (2-methoxyethyl) triethylphosphonium bis(trifluoromethylsulfonyl)imide, (2-methoxyethyl)tributylphosphonium bis(trifluoromethylsulfonyl)imide, and (2-methoxyethyl)triethylammonium bis(trifluoromethylsulfonyl)imide in the temperature range from 323.15 K to 373.15 K. Experimental values were determined using the method of inverse gas chromatography. Measured infinite dilution activity coefficients are used to calculate the partial molar excess Gibbs free energy, enthalpy and entropy associated with dissolution of the organic solutes into the three ionic liquid solvents. Abraham model correlations for solute transfer into each ionic liquid solvent have also been determined from the measured infinite dilution activity coefficient data.

Original languageEnglish (US)
Article number112786
JournalJournal of Molecular Liquids
Volume304
DOIs
StatePublished - Apr 15 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

  • Abraham model
  • Activity coefficients at infinite dilution
  • Chemical separations
  • Excess thermodynamic properties
  • Ionic liquid solvents
  • Partition coefficients

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