Separation of aliphatic from aromatic hydrocarbons and sulphur compounds from fuel based on measurements of activity coefficients at infinite dilution for organic solutes and water in the ionic liquid N,N-diethyl-N-methyl-N-(2-methoxy-ethyl)ammonium bis(trifluoromethylsulfonyl)imide

Marek Królikowski , Marta Królikowska , Cezary Wiśniewski

Abstract

The activity coefficients at infinite dilution, View the MathML source, for 53 different solutes including alkanes, cycloalkanes, alkenes, alkynes, aromatic hydrocarbons, alcohols, ethers, ketones, thiophene, acetonitrile, pyridine, 1-nitropropane and water in the ionic liquid N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethylsulfonyl)imide, [COC2N1,2,2][NTf2] were determined using inverse gas-liquid chromatography. The experiment has been performed at five temperatures over the range of (318.15 to 358.15) K. From experimental results, the partial molar excess Gibbs energy, View the MathML source, enthalpy View the MathML source and entropy term View the MathML source at infinite dilution were calculated. Additionally, the gas-liquid partition coefficients of the solutes, KL were calculated. The value of selectivity, View the MathML source and capacity, View the MathML source at infinite dilution for hexane/benzene, cyclohexane/benzene, heptane/thiophene and heptane/pyridine separation processes were calculated directly from View the MathML source. These parameters are compared to literature values of View the MathML source and View the MathML source for other ionic liquids and NMP, or sulfolane – solvents commercially used on an industrial scale in separation processes. Moreover, physicochemical properties of pure ILs that is: density, viscosity and surface tension have been determined as a function of temperature and basic thermal properties of pure [COC2N1,2,2][NTf2] were measured using DSC technique.
Author Marek Królikowski ZChF
Marek Królikowski,,
- Department Of Physical Chemistry
, Marta Królikowska ZChF
Marta Królikowska,,
- Department Of Physical Chemistry
, Cezary Wiśniewski ZChF
Cezary Wiśniewski ,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2016
Vol103
Pages115-124
Publication size in sheets0.5
Keywords in EnglishActivity coefficient at infinite dilution; Ionic liquid; [COC2N1,2,2][NTf2]; Density; Viscosity; Surface tension; Thermodynamics properties at infinite dilution
DOIDOI:10.1016/j.jct.2016.07.017
URL http://www.sciencedirect.com/science/article/pii/S0021961416301549
project[2015/17/D/ST5/01330 POLON] Badania fizykochemiczne i termodynamiczne cieczy jonowych oraz układów eutektycznych do odsiarczania paliw ciekłych w środowisku utleniającym. . Project leader: Królikowski Marek, , Phone: 5640, start date 01-02-2016, planned end date 31-01-2019, Implemented
WCh Projects financed by NSC [Projekty finansowane przez NCN]
Languageen angielski
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1-s2.0-S0021961416301549-main.pdf 1.03 MB
Score (nominal)35
ScoreMinisterial score [Punktacja MNiSW] = 30.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2016 = 2.726 (2) - 2016=2.784 (5)
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