Measurements of Activity Coefficients at Infinite Dilution for Organic Solutes and Water in the Ionic Liquid 1-Butyl-1-methylpiperidinium Thiocyanate
Urszula Domańska-Żelazna , Marta Królikowska
AbstractThe activity coefficients at infinite dilution (?13∞) for 33 solutes: alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, and water in the ionic liquid, 1-butyl-1-methylpiperidinium thiocyanate ([BMPIP][SCN]), were determined by gas?liquid chromatography over the temperature range (318.15 to 358.15) K. The partial molar excess enthalpies at infinite dilution values (?H1E,∞) were calculated from the experimental ?13∞ values, obtained over the temperature range. The selectivities for heptane/benzene, cyclohexane/benzene, and heptane/thiophene separation problems were calculated from the ?13∞ and compared to the literature values for other ionic liquids with thiocyanate-based anion or with a butyl-methyl-substituted cation.
|Journal series||Journal of Chemical and Engineering Data, ISSN 0021-9568, (A 35 pkt)|
|Publication size in sheets||0.5|
|Publication indicators||= 34; : 2011 = 0.979; : 2011 = 1.693 (2) - 2011=1.965 (5)|
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