弱酸和弱碱制备新型离子液体研究

对苯酚与乙酰胺以不同摩尔比制备的离子液体进行了研究,并考察了其熔点、密度、电导率、溶解性等物理性质。结果表明,合成的离子液体的熔点随苯酚与己内酰胺的摩尔比的不同而变化,当摩尔比为3.5∶1时熔点最低。离子液体的密度比水和乙醇的高,随温度的升高,密度降低。离子液体的电导率在10-4S/m数量级,随温度的升高,电导率增加,电导率与温度符合Arrhenius方程。溶解性实验表明,离子液体具有较强的溶解能力,能与水、乙醇、乙酯等一般溶剂互溶。IR测试结果显示,合成的离子液体具有苯酚和乙酰胺的特征峰。

Preparation of new type ionic liquid with weak acid and weak base

The new type ionic liquid was synthesized with phenol and acetamide in different molar ratios,and the physical properties were measured such as melting point,density,conductivity,solubility and so on. The results show that the melting point varies with the change of the molar ratio of phenol to acetamide. When the molar ratio of phenol to acetamide is 3.5∶1 it is the lowest. The density of ionic liquid is bigger than that of water and alcohol,and decreases with temperature increasing. The conductivity is in 10-4 S/m magnitude,increases with temperature increasing,and accords to Arrhenius equation. The solubility displays that ionic liquid is miscible with organic solvents such as water,ethanol,ethyl ester and so on. The results of IR show that the ionic liquid has the character peaks of phenol and acetamide.