Activity coefficients at infinite dilution and physicochemical properties for organic solutes and water in the ionic liquid 1-(2-methoxyethyl)-1- methylpyrrolidinium trifluorotris(perfluoroethyl)phosphate
Andrzej Marciniak , Michał Wlazło
AbstractThis work presents new data of activity coefficients at infinite dilution, γ∞ of different organic solutes and water in the 1-(2-methoxyethyl)-1-methylpyrrolidinium trifluorotris(perfluoroethyl)phosphate ionic liquid. Values of γ∞ were determined for 62 solutes, including alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, esters, 1-nitropropane, butanal, acetonitrile and water by inverse gas chromatography over the temperature range from (318.15 to 368.15) K. The basic thermodynamic functions, namely partial molar excess Gibbs energies, View the MathML sourceΔG1E,∞, enthalpies, View the MathML sourceΔH1E,∞ and entropies, View the MathML sourceΔS1E,∞ at infinite dilution were calculated from the experimental γ∞ values obtained over the temperature range. Additionally the gas–liquid partition coefficients, KL were determined. Experimental values of gas–liquid partition coefficients were used to determine the coefficients in the Abraham solvation parameter model (LFER). Results are compared to previously investigated ionic liquids with the same cations or anions. The selectivities and capacities at infinite dilution for alkanes/thiophene extraction problems were calculated from experimental γ∞ values to verify the possibility of investigated ionic liquid as an entrainer in liquid–liquid extraction.
|Journal series||Journal of Chemical Thermodynamics, ISSN 0021-9614|
|Publication size in sheets||0.5|
|Keywords in English||Activity coefficient at infinite dilution; Ionic liquid; 1-(2-Methoxyethyl)-1-methylpyrrolidinium trifluorotris(perfluoroethyl)phosphate; [COC2mPYR][FAP]; Selectivity; Thiophene extraction; LFER|
|ASJC Classification||; ;|
|Score|| = 30.0, 01-02-2020, ArticleFromJournal|
= 35.0, 01-02-2020, ArticleFromJournal
|Publication indicators||= 17; = 19; : 2013 = 1.234; : 2013 = 2.423 (2) - 2013=2.399 (5)|
|Citation count*||36 (2020-09-10)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.