Activity Coefficients at Infinite Dilution of Organic Solutes and Water in Tributylethylphosphonium Diethylphosphate Using Gas-Liquid Chromatography: Thermodynamic Properties of Mixtures Containing Ionic Liquids

Marta Królikowska , Marcin Orawiec


In this work, new set of experimental activity coefficients at infinite dilution, γ13∞ for 51 various organic solutes such as alkanes, 1-alkenes, 1-alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, and water in tributylethylphosphonium diethylphosphate, [P2,4,4,4][DEP] have been measured in temperature range T = (328.15 to 368.15) K by gas–liquid chromatography, GLC. From experimental data the partial molar excess Gibbs free energies ΔG1E,∞, enthalpies ΔH1E,∞, and entropies TrefΔS1E,∞ at infinite dilution were calculated. Additionally the gas–liquid partition coefficients, KL were determined. Moreover, capabilities of the studied ionic liquid in several liquid–liquid extraction processes are evaluated by selectivity and capacity at infinite dilution. These parameters were compared to the values from the recent literature for other ionic liquids with phosphonium cation or diethylphosphate anion. Additionally, basic thermophysical characterization of pure [P2,4,4,4][DEP] including: glass transition temperature Tg,1 as well as the heat capacity at the glass-transition temperature ΔCp(g),1 were determined using differential scanning microcalorimetry technique, DSC. Moreover, ambient pressure liquid density of pure IL is determined in temperature range T = (298.15 to 368.15) K.
Author Marta Królikowska ZChF
Marta Królikowska,,
- Department Of Physical Chemistry
, Marcin Orawiec ZChF
Marcin Orawiec,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical and Engineering Data, ISSN 0021-9568
Issue year2016
Publication size in sheets0.5
Languageen angielski
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Score (nominal)30
ScoreMinisterial score = 30.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.323 (2) - 2016=2.448 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.