Rheological behaviour of binary mixtures containing hexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) and bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272) between 288.15 K and 343.15 K

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• 作者：Diana Cholico-Gonzalez^a ; ^b ; ^c ; Mario Avila-Rodriguez^c ; J. Antonio Reyes-Aguilera^d ; Gé ; rard Cote^a ; ^b ; Alexandre Chagnes^a ; ^b ; ^{alexandre-chagnes@ens.chimie-paristech.fr}
• 关键词：Viscosity ; Interaction ; Excess properties ; Room Temperature Ionic Liquids (RTIL) ; Cyanex 272 ; Cyphos IL 101
• 刊名：Journal of Molecular Liquids
• 出版年：2012
• 期刊代码：61_01677322
• 类别：ch
• 出版时间：May, 2012
• 卷：169
• 期：Complete
• 页码：27-32
• 文件大小：746 K

摘要

Variation of the viscosity as a function of temperature and composition in Cyanex 272-Cyphos IL 101 binary mixtures has been investigated between 288.15 K and 343.15 K in the whole range of mole fraction. Valuable information regarding intermolecular interactions between Cyanex 272 and Cyphos IL 101 has been deduced from viscosity data by calculating excess viscosities, activation enthalpies and entropies and ion contributions to the activation energy and the activation entropy for the viscous flow. Peculiarly Cyphos IL 101 and Cyanex 272 exist as contact ion-pairs and ion-pairs separated by hydrochloride molecule depending on the mole fraction of Cyphos IL 101 in the binary mixture.