Activity coefficients at infinite dilution measurements for organic solutes in the ionic liquid N
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- 作者：Trevor M. Letcher ; Deresh Ramjugernath ; Marek Kró ; likowski ; Marta Laskowska ; Paramespri Naidoo ; Urszula Domań ; ska
- 关键词：Activity coefficients at infinite dilution ; Ionic liquid ; [BMPy][TOS]
- 刊名：Fluid Phase Equilibria
- 出版年：2009
- 出版时间：15 February 2009
- 年：2009
- 卷：276
- 期：1
- 页码：31-36
- 全文大小：294 K
文摘
Activity coefficients at infinite dilution for 19 solutes: alkanes, cycloalkanes, alk-1-enes, alk-1-ynes, benzene and alcohols in the ionic liquid N-butyl-4-methylpyridinium tosylate ([BMPy][TOS]) were determined by gas–liquid chromatography at four temperatures T = (328.15, 333.15, 338.15, and 343.15) K. The partial molar excess enthalpy values at infinite dilution were calculated from the experimental gamma infinity values obtained over the temperature range. The selectivity for the hexane/benzene and cyclohexane/benzene separations was calculated from the gamma infinity values and compared to the literature values for other ionic liquids, NMP and sulfolane.