物理化学学报2017，Vol.33Issue(3)：513-519,7.DOI:10.3866/PKU.WHXB201610251
[C2mim][Ala]丙氨酸离子液体水溶液粘滞流动的活化参数
Parameters of the Activation of Viscous Flow of Aqueous [C2mim][Ala]
摘要
Abstract
The density and viscosity of aqueous solutions of an ionic liquid (IL) based on alanine,[C2mim][Ala],with various molalities were measured in the temperature range of T =288.15-328.15 K with intervals of 5 K.From the Jones-Dole equation,a viscosity B-coefficient with a large positive value and dB/d T ＜ 0 were obtained.According to Feakins,the contribution of the solute to the activation free energy for viscous flow of the solution,Aμ≠02,was obtained.The relationship between△μ≠02 and temperature was linear,allowing the standard molar activation entropy,AS≠02,and enthalpy,△H≠02,to be obtained.On the basis of Eydng's theory,a new semi-emp irical method to estimate the viscosity of aqueous [C2mim][Ala] was proposed.The values estimated using this method agreed well with the corresponding experimental ones.关键词
离子液体/溶液粘度/粘度B系数/粘滞流动活化参数/过渡态理论Key words
Ionic liquid/Viscosity of solution/Viscosity B-coefficient/Activation parameter for viscous flow of solution/Transition-state theory分类
化学化工引用本文复制引用
佟静,刘璐,张朵,郑煦,陈霞,杨家振..[C2mim][Ala]丙氨酸离子液体水溶液粘滞流动的活化参数[J].物理化学学报,2017,33(3):513-519,7.基金项目
The project was supported by the National Natural Science Foundation of China (21273003).国家自然科学基金(21273003)资助项目 （21273003）
