Domańska Urszula
Department of Physical Chemistry, Warsaw University of Technology, Poland.
Int J Mol Sci. 2010 Apr 21;11(4):1825-41. doi: 10.3390/ijms11041825.
A review of the relevant literature on 1-alkyl-1-methylpyrrolidinium-based ionic liquids has been presented. The phase diagrams for the binary systems of {1-ethyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [EMPYR][CF(3)SO(3)] + water, or + 1-butanol} and for the binary systems of {1-propyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [PMPYR][CF(3)SO(3)] + water, or + an alcohol (1-butanol, 1-hexanol, 1-octanol, 1-decanol)} have been determined at atmospheric pressure using a dynamic method. The influence of alcohol chain length was discussed for the [PMPYR][CF(3)SO(3)]. A systematic decrease in the solubility was observed with an increase of the alkyl chain length of an alcohol. (Solid + liquid) phase equilibria with complete miscibility in the liquid phase region were observed for the systems involving water and alcohols. The solubility of the ionic liquid increases as the alkyl chain length on the pyrrolidinium cation increases. The correlation of the experimental data has been carried out using the Wilson, UNIQUAC and the NRTL equations. The phase diagrams reported here have been compared to the systems published earlier with the 1-alkyl-1-methylpyrrolidinium-based ionic liquids. The influence of the cation and anion on the phase behaviour has been discussed. The basic thermal properties of pure ILs, i.e., melting temperature and the enthalpy of fusion, the solid-solid phase transition temperature and enthalpy have been measured using a differential scanning microcalorimetry technique.
本文对基于1-烷基-1-甲基吡咯烷鎓的离子液体的相关文献进行了综述。采用动态法在常压下测定了{1-乙基-1-甲基吡咯烷鎓三氟甲磺酸盐（三氟甲磺酸盐）[EMPYR][CF(3)SO(3)] + 水，或 + 1-丁醇}二元体系以及{1-丙基-1-甲基吡咯烷鎓三氟甲磺酸盐（三氟甲磺酸盐）[PMPYR][CF(3)SO(3)] + 水，或 + 一种醇（1-丁醇、1-己醇、1-辛醇、1-癸醇）}二元体系的相图。讨论了醇链长度对[PMPYR][CF(3)SO(3)]的影响。观察到随着醇烷基链长度的增加，溶解度系统性降低。对于涉及水和醇的体系，在液相区域观察到（固 + 液）相平衡且完全互溶。离子液体的溶解度随着吡咯烷鎓阳离子上烷基链长度的增加而增加。使用Wilson、UNIQUAC和NRTL方程对实验数据进行了关联。本文报道的相图与早期发表的基于1-烷基-1-甲基吡咯烷鎓离子液体的体系进行了比较。讨论了阳离子和阴离子对相行为的影响。使用差示扫描量热法技术测量了纯离子液体的基本热性质，即熔点和熔化焓、固 - 固相变温度和焓。
