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采用二溴丁烷和3-甲基吡啶(物质的量之比为1.0∶2.2)为原料,以异丙醇为溶剂,温度控制在70～80℃,反应4～6h,得到吡啶溴盐离子液体。用吡啶溴盐与六氟磷酸盐发生置换反应,搅拌反应4h,得到六氟磷酸盐吡啶离子液体。测定了[C4(MPy)2][PF6]2离子液体在有机溶剂中的电导率;及离子液体在不同溶剂、不同浓度、不同温度下的电导率。结果表明:溶液的电导率随着温度升高而增大;随着浓度的增大而增大。相同温度、浓度下,乙腈的电导率最大;环丁砜的电导率最小。
Using dibromobutane and 3-methylpyridine (the amount of material ratio of 1.0: 2.2) as raw material, isopropanol as solvent, the temperature was controlled at 70 ~ 80 ℃, the reaction 4 ~ 6h, to give pyridinium bromide ion liquid. Replace the reaction with pyridine bromide and hexafluorophosphate, the reaction was stirred for 4h, to give a hexafluorophosphate pyridine ionic liquid. The conductivity of [C4 (MPy) 2] [PF6] 2 ionic liquids in organic solvents was measured and the ionic liquids were tested for their conductivity under different solvents, different concentrations and different temperatures. The results show that the conductivity of the solution increases with increasing temperature and increases with increasing concentration. At the same temperature and concentration, the conductivity of acetonitrile is the highest; the conductivity of sulfolane is the smallest.