Solubility of four novel Brønsted-acidic ionic liquids with 8-hydroxyquinoline cation in six alcohols
作者:Xuezhi Dai、Tian Yao、Dan Tang、Hang Song、Lincai Peng、Shun Yao
DOI:10.1016/j.molliq.2016.04.015
日期:2016.7
With increasing temperatures, the solubility of ionic liquids increased and some of them showed “temperature-sensitive” property. The solubility of ionic liquids is closely related to the polarity and molecular structure of the solvents together with the strength of hydrogen bonding between anionic group of ionic liquids and alcohols. The experimental solubility values were well correlated by the
四种新型布朗斯台德酸性离子液体(8-羟基喹啉磷酸盐([HOQu] [H 2 PO 4 ]),硫酸8-羟基喹啉硫酸盐([HOQu] [HSO 4 ]),8-羟基喹啉甲烷磺酸盐([HOQu])的平衡溶解度[CH 3 SO 3 ])和8-羟基喹啉对甲苯磺酸盐([HOQu] [ p使用静态方法在(278.15至348.15)K的温度下测量了六种低级醇(甲醇,乙醇,1-丙醇,2-丙醇,1-丁醇和2-甲基-1-丙醇)中的-TSA]))。随着温度的升高,离子液体的溶解度增加,其中一些显示出“温度敏感”特性。离子液体的溶解度与溶剂的极性和分子结构以及离子液体的阴离子基团和醇之间的氢键强度密切相关。通过修改的Apelblat方程和λh方程可以很好地关联实验溶解度值。溶解焓(Δdisoln S)和溶解熵(Δdisoln H)用van't Hoff方程确定),并在T = 298.15 K时计算吉布斯自由能(Δdisoln