1乙基3甲基咪唑乳酸盐离子液体的热力学研究毕业论文.doc

本科毕业论文（设计） 1-乙基-3-甲基咪唑乳酸盐离子液体的热力学性质研究 The study on thermodynamic properties of 1-ethyl-3-methy imidazolium lactic acid ionic liquid Bohai University 大连理工大学毕业论文（设计）格式规范 1-乙基-3-甲基咪唑乳酸盐离子液体的热力学研究 -  PAGE II - -  PAGE I - 摘 要 离子液体（ionic liquid）是指在室温范围内(通常为100℃)呈现液态的完全由离子构成的物质体系，又称室温离子液体(room temperature ionic liquids)。离子液体的最早报导可以追溯到20世纪初。与传统的溶剂相比离子液体具有如下特点:(1)没有显著的蒸气压(2)具有良好的溶解能力。(3)具有良好的导电性。(4)具有较好的热稳定性和化学稳定性。(5)易于与其他物质分离，可循环利用。(6)制备简单。 作为新型的绿色溶剂和环保电解质，离子液体其具有良好的导电性、较低的熔点、宽阔的电???学窗口和可以忽略的蒸汽压等多种优点而广泛的应用于诸多领域。因此，离子液体的合成开发与应用越来越受到化学工作者的重视，已被广泛地应用于有机合成、分离、电化学和无机物的制备中。本文对离子液体的类别、特性、发展历史及应用前景做了总结，并以1-乙基-3-甲基咪唑乳酸盐离子液体为研究对象,对离子液体热力学性质进行研究。 关键词:离子液体;绿色溶剂;环保电解质;热力学性质1-乙基-3-甲基咪唑乳酸盐离子液体的热力学研究 -  PAGE IV - The study on thermodynamic properties of 1-ethyl-3-methyl imidazolium lactic acid ionic liquid Abstract Ionic liquids is in the temperature range (usually under the 100℃) rendered entirely by the Ionic composition of the liquid material system, also known as ionic liquids at room temperature .Earliest reports of ionic liquids can be traced back to the early 20th century. Compared with traditional solvent for Ionic liquid has the following characteristics: The first, there is no significant vapor pressure. The second, has the ability of dissolution. Thirdly, with good electrical conductivity. The fourth, has good thermal stability and chemical stability. The fifth, it can be easily separated with other material and can be recycled. The sixth, it has the preparation of simple. As a new type of Green solvents and environmentally friendly electrolyte, it has the good conductivity, low melting point, wide electrochemical window and negligible vapour pressure of many advantages which can widely applied to many other areas. So the synthetic development and applications of ionic liquids increasing attracted the attention of chemical workers, which has been widely used in organic synthesis, separation, electrochemistry and preparation of inorganic compounds. This article ch