Activity Coefficients at Infinite Dilution Measurements for Organic Solutes and Water in the Ionic Liquid 1-(3-Hydroxypropyl)pyridinium Trifiuorotris(perfluoroethyl)phosphate

作者：Marciniak Andrzej^*; Wlazlo Michal

来源：Journal of Physical Chemistry B, 2010, 114(20): 6990-6994.

DOI：10.1021/jp101573f

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-C(3)OHPY][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-C(3)OHPY][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.

• 出版日期2010-5-27