二元混合离子液体的电导率与离子间的缔合作用

doi:10.3866/PKU.WHXB201304172

Abstract

Abstract:

In this study, the conductivity of 13 ionic liquids (ILs) and 25 related binary mixtures were determined at temperatures ranging from 293.15-323.15 K. The conductivity data of the pure ILs and their mixtures were fitted using the Vogel-Tammann-Fulcher (VTF) equation. The ionic association in the ILs and IL mixtures was discussed using the parameters of the VTF equation. It was demonstrated that at the same temperature, the ILs with short side chain cations, low charge density anions, and weak hydrogen bonding force between cations and anions usually exhibited high conductivity. Anions had a more obvious effect on conductivity than cations. The ionic association in the mixtures was affected not only by the species but also by the composition of the mixture.

Key words: Ionic liquid, Binary mixture, Conductivity, Ionic association, VTF equation

NING Hui, HOU Min-Qiang, YANG De-Zhong, KANG Xin-Chen, HAN Bu-Xing. Ionic Association in Binary Ionic Liquids by Conductivity[J].Acta Phys. -Chim. Sin., 2013, 29(10): 2107-2113.

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Ionic Association in Binary Ionic Liquids by Conductivity

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