氯化镁-DMF体系类离子液体物理性质的测定及意义  

Physical properties determination of ionic liquids in magnesium chloride-DMF and its significance

作　　者：姜小萍[1] 汪继辉 

机构地区：[1]青海民族大学化学与生命科学学院,青海西宁810007

出　　处：《山西化工》2014年第1期31-33,47,共4页Shanxi Chemical Industry

摘　　要：离子液体是指全部由离子组成的液体,如高温下呈液体状态的KCl、KOH等,它有着优异的物理化学性质,如高电导率、低黏度、宽的电化学窗口、无毒和低蒸汽压等,受到了广泛的关注[1-4]。利用DMF和六水合氯化镁固体,在常温、混合搅拌的条件下合成了一种无色、透明、均一性良好的类离子液体。该类离子液体有着与离子液体相似的物化性质。在密封良好的情况下,采用卡尔费休电解法测定类离子液体中的微量水含量,并进行了水含量的理论值与实际值的比较,得出了去除氯化镁中结晶水的方法。利用电导率仪测定了该类离子液体的电导率,并得出了其电导率随温度和组成的变化关系。Ionic liquids is made up of liquids of ion, such as the liquid state KCI, KOH of high temperature. It has excellent physicochemical properties, such as low viscosity, high conductivity, wide electrochemical window, non-toxic and low vapor pressure, etc and has received the widespread attention. A colorless, transparent, good uniformity of ionic liquid was synthe- sized under the solid mixture of the DMF and magnesium chloride hexahydrate. In the case of a good seal, Karl fischer electro- lytic method was used for determination of trace moisture in ionic solution. The water content of the theoretical value and actual value were compared. And the conductivity of the ionic liquid was measured by electrical conductivity meter, and this paper also obtaines the relationship with the change of temperature and composition.

关 键 词：类离子液体 电导率 水含量 六水合氯化镁 DMF 

分 类 号：O646[理学—物理化学]