TY - JOUR
T1 - Characterization of the solubilizing ability of short-chained glycol-grafted ammonium and phosphonium ionic liquids
AU - Mutelet, Fabrice
AU - Hussard, Caroline
AU - Baker, Gary A.
AU - Zhao, Hua
AU - Churchill, Brittani
AU - Acree, William E.
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/4/15
Y1 - 2020/4/15
N2 - 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.
AB - 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.
KW - Abraham model
KW - Activity coefficients at infinite dilution
KW - Chemical separations
KW - Excess thermodynamic properties
KW - Ionic liquid solvents
KW - Partition coefficients
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U2 - 10.1016/j.molliq.2020.112786
DO - 10.1016/j.molliq.2020.112786
M3 - Article
AN - SCOPUS:85081116333
SN - 0167-7322
VL - 304
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
M1 - 112786
ER -