微波频率下离子液体介电特性

Dielectric Property of Ionic Liquid under Microwave Frequency

作为新型介质离子液体有着广泛的应用前景,使得离子液体及其合成方法成为了研究的热点。在众多的合成方法中,微波作为新型高效的加热能源用于合成离子液体具有环保、高效等优点。本文对含有[BuMelm]、[Tf2N]、[Al(hfip)4]等离子的离子液体基于Cole-Cole分析其介电弛豫概率密度、介电弛豫次数、离子间的相互作用几率等参数来描述阴阳离子对离子液体的介电特性的贡献。基于Cole-Cole模型的离子液体介电特性研究为微波能应用于离子液体大规模合成提供了理论基础。

The method of assisted-microwave preparation of ionic liquid has the advantage of high effi-ciency and pollution-free in all preparation methods. The density of dielectric relaxation act, dielectric re-laxation acts and the rate of interactions of particles for ionic liquids which include [BuMelm], [Tf2N] and [Al（hfip）4] ions were analyzed based on Cole-Cole model. And these parameters are used to describe con-tributions of anion or cation on dielectric property of ionic liquid. This work can provide theoretical basis for ionic liquid preparation on a large scale.