(昆明理工大学 材料与冶金工程学院， 昆明 650093)
摘 要: 研究AlCl3-BMIC（氯化-1-甲基-3-丁基咪唑）离子液体电导率与温度、 组分之间的关系。 结果表明：当离子液体中AlCl3的摩尔分数x(AlCl3)<0.667时， 离子液体的电导率随着x(AlCl3)的增加而增大； 但在0.667<x(AlCl3)<0.692区域内，x(AlCl3)对电导率影响不大； 随着温度的升高， AlCl3-BMIC离子液体的电导率增大， 电导率κ与温度t的关系符合Kohlraush经验公式； 在x(AlCl3)<0.5的路易斯碱性区域，温度系数α、β均随着x(AlCl3)的增大而减小；而在x(AlCl3)>0.5的路易斯酸性区域， x(AlCl3)对温度系数α、β的影响均不明显。
关键字: AlCl3-BMIC离子液体；氯化-1-甲基-3-丁基咪唑; 电导率
AlCl3-BMIC room temperature ionic liquids
（Faculty of Materials and Metallurgical Engineering,
Kunming University of Science and Technology, Kunming 650093, China）
Abstract: The electrical conductivities of AlCl3-BMIC (1-butyl-3-methylimidazolium chloride) ionic liquid were measured against temperature and composition. The results show that the conductivities of the ionic liquid increases with molar fraction x(AlCl3) of AlCl3 when x(AlCl3)<0.667. However, the effect of AlCl3 molar fraction on the conductivities is negligible when 0.667<x(AlCl3)<0.692. It is demonstrated that the electrical conductivities are increased with increasing temperature, which can be described by Kohlraush empirical equation. For Lewis base ionic liquid (x(AlCl3)<0.5), the temperature coefficients α and β are significantly decreased with increasing molar fraction of AlCl3. For Lewis acid ionic liquid (x(AlCl3)>0.5), however, the molar fraction of AlCl3 has no obvious effect on the temperature coefficients.
Key words: AlCl3-BMIC ionic liquid; 1-butyl-3-methylimidazolium chloride; electrical conductivity
