Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 114, Issue 20, Pages 6990-6994Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp101573f
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- Ministry of Science and Higher Education [N209 096435]
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The activity coefficients at infinite dilution, gamma(infinity)(13), for 37 solutes, alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, and water, in the ionic liquid 1-(3-hydroxypropyl)pyridinium trifluorotris(perfluoroethyl)phosphate [N-C3OHPY][FAP] were determined by gas liquid chromatography at the temperatures from 308.15 to 358.15 K. The partial molar excess enthalpies at infinite dilution values Delta H-1(E,infinity) were calculated from the experimental gamma(infinity)(13) values obtained over the temperature range. The selectivities for aliphatics/aromatics hydrocarbons separation problem were calculated from the gamma(infinity)(13) values and compared to the literature values for other ionic liquids, N-methylpyrrolidone (NMP) and sulfolane. It was found that the investigated [N-C3OHPY][FAP] ionic liquid shows much higher selectivity and capacity at infinite dilution than the generally used organic solvents such as NMP, sulfolane, and other ionic liquids.
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