3-甲基-N-丁基吡啶三氟甲基磺酸酰亚胺盐与醇类溶剂的二元混合体系的电导率性质研究

摘要

A novel hydrophobic ionic liquid N-butyl-3-methyl pyridinium bis（trifluoromethylsulfonyl）imide（[C4M3Py][NTf2]） is synthesized and characterized.The electrical conductivities of three binary sys-tems composed of the ionic liquid and methanol,ethanol,and isopropanol are determined respectively.The re-sults show the electrical conductivities of the binary systems are greater than that of the pure ionic liquid and thestrength sequence of the conductivities is： k（[C4M3Py][NTf2]＋ methanol） k（[C4M3Py][NTf2 ＋ etha-nol） k（[C4M3Py][NTf2 ＋ isopropanol）.The relationship between the ionic liquid concentrations and theconductivities of the mixed systems is described by an empirical Castell-Amisequation.%本文设计合成了一种新型疏水性离子液体——3-甲基-N-丁基吡啶甲基磺酸酰亚胺盐（[C4M3Py][NTf2]）,并进行了表征,测量了这种离子液体分别与甲醇、乙醇、异丙醇所组成的3种混合体系的电导率值。结果显示混合体系的电导率与纯离子液体的电导率相比有显著的增大趋势,三种混合体系的电导率强度顺序为k（[C4M3Py][NTf2]＋甲醇）〉k（[C4M3Py][NTf2]＋乙醇）〉k（[C4M3Py][NTf2]＋异丙醇）,并用Castell-Amis经验方程对离子液体浓度与混合体系电导率之间的关系进行了描述。