离子液体[C_npy][NTf_2](n=2,4,5)的动力粘度和电导率(英文)

Dynamic Viscosity and Conductivity of Ionic Liquids [C_npy][NTf_2](n=2,4,5)

在298.15-338.15K和283.15-338.15K温度范围内,分别测量了N-烷基吡啶双三氟甲磺酸亚胺(烷基链分别为:乙基、丁基、戊基)三种疏水型离子液体的动力粘度和电导率.利用Arrhenius方程和Fulcher方程将测量的动力粘度和电导率对温度拟合,得到了动力粘度和电导率随温度变化方程式.从电导率和密度计算出了上述三种离子液体在283.15-338.15K温度范围内的摩尔电导率.应用Walden规则,描述了动力粘度与摩尔电导率之间的关系.

Experimental dynamic viscosity and conductivity data of the air- and water-stable hydrophobic ionic liquids （ILs） N-alkylpyridinium bis（trifluoromethylsulfonyl）imide （[Cnpy][NTf2], n=2, 4, 5） were recorded at temperatures ranging from 298.15 to 338.15 K and from 283.15 to 338.15 K with an interval of 5 K. The dynamic viscosity and conductivity values of the [Cnpy][NTf2] （n=2, 4, 5） ILs were fitted using the Arrhenius equation and the Fulcher equation. The molar conductivity was calculated at temperatures ranging from 283.15 to 338.15 K from the conductivity and density data. The relationship between the dynamic viscosity and the molar conductivity was discussed in terms of Walden＇s rule.