文献类型：期刊文献

英文题名：Densities and viscosities of the ionic liquid [C₄mim][PF₆]+ N,N-dimethylformamide binary mixtures at 293.15K to 318.15K

作者：Geng Yanfang;Wang Tengfang;Yu Dahong;Peng Changjun[1];Liu Honglai;Hu Ying

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2008

卷号：16

期号：2

起止页码：256

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000255841900016)】；

语种：英文

外文关键词：ionic liquid; N, N-dimethylformamide; density; viscosity; [C(4)mim][PF6]; correlation

摘要：Viscosities and densities for 1-butyl-3-methylimidazolium hexafluorophosphate ([C(4)mim][PF6]) and N, N-dimethylformamide (DMF) binary mixtures have been measured at the temperature range from 293.15 K to 318.15 K. It is shown that the viscosities and densities decrease monotonously with temperature and the content of DUE Various correlation methods including Arrhenius-like equation, Seddon et al.'s equation, Redlich-Kister equation with four parameters, and other empirical equations were applied to evaluate these experimental data. A model based on an equation of state for estimating the viscosity of mixtures containing ionic liquids were proposed by coupling with the excess Gibbs free energy model of viscosity, which can synchronously calculate the viscosity and the molar volume. The results show that the model gives a deviation of 8.29% for the viscosity, and a deviation of 1.05% for the molar volume when only one temperature-independent adjustable parameter is adopted. The correlation accuracy is further improved when two parameters or one temperature-dependent parameter is used.