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
AbstractThe 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.
|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; [COC2N1,2,2][NTf2]; Density; Viscosity; Surface tension; Thermodynamics properties at infinite dilution|
|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
|Score|| = 30.0, 28-11-2017, ArticleFromJournal|
= 35.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 2.726 (2) - 2016=2.784 (5)|
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