(昆明理工大學(xué) 材料與冶金工程學(xué)院， 昆明 650093)
摘 要: 研究AlCl3-BMIC（氯化-1-甲基-3-丁基咪唑）離子液體電導(dǎo)率與溫度、 組分之間的關(guān)系。 結(jié)果表明：當(dāng)離子液體中AlCl3的摩爾分?jǐn)?shù)x(AlCl3)<0.667時， 離子液體的電導(dǎo)率隨著x(AlCl3)的增加而增大； 但在0.667<x(AlCl3)<0.692區(qū)域內(nèi)，x(AlCl3)對電導(dǎo)率影響不大； 隨著溫度的升高， AlCl3-BMIC離子液體的電導(dǎo)率增大， 電導(dǎo)率κ與溫度t的關(guān)系符合Kohlraush經(jīng)驗(yàn)公式； 在x(AlCl3)<0.5的路易斯堿性區(qū)域，溫度系數(shù)α、β均隨著x(AlCl3)的增大而減小；而在x(AlCl3)>0.5的路易斯酸性區(qū)域， x(AlCl3)對溫度系數(shù)α、β的影響均不明顯。
關(guān)鍵字: AlCl3-BMIC離子液體；氯化-1-甲基-3-丁基咪唑; 電導(dǎo)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
