Influence of water concentration in the viscosities and densities of cellulose dissolving ionic liquids. Correlation of viscosity data

被引：23
作者：
Jimenez de la Parra, Cristina [1 ]
Zambrano, Johnny R. [2 ,3 ]
Dolores Bermejo, M. [1 ]
Martin, Angel [1 ]
Segovia, Jose J. [2 ]
Jose Cocero, M. [1 ]
机构：
[1] Univ Valladolid, Dept Chem Engn & Environm Technol, High Pressure Proc Grp, E-47011 Valladolid, Spain
[2] Univ Valladolid, Escuela Ingn Ind, Res Grp TERMOCAL Thermodynam & Calibrat, E-47011 Valladolid, Spain
[3] Escuela Politec Nacl, Fac Ingn Geol & Petr, Dept Petr, Ladron De Guevara 11253, Quito, Ecuador
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2015年 / 91卷
关键词：
Ionic liquid; Water; Density; Viscosity; Imidazolium chloride; Imidazolium acetate; BINARY-MIXTURES; PHYSICAL-PROPERTIES; 1-ETHYL-3-METHYLIMIDAZOLIUM ACETATE; DYNAMIC VISCOSITIES; TEMPERATURE; CHLORIDE; IMIDAZOLIUM; ETHANOL; SERIES;
D O I：
10.1016/j.jct.2015.07.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The densities and viscosities of aqueous mixtures of two cellulose dissolving ionic liquids: 1-allyl-3-methylimidazolium chloride and 1-ethyl-3-methyl imidazolium acetate ionic liquids have been experimentally determined for water concentration up to approx. 35% water at atmospheric pressure and temperature range from (298.15 to 373.15) K. Molar excess volumes were calculated, resulting in negative values. Literature viscosity correlations were modified in order to describe the viscosity as a function of temperature and water concentration for both water concentrations lower than chi H2O = 0.4 and for all the water concentration range. These modified equations were applied to correlate viscosity of (water + - ionic liquid) viscosity data for other 1-alkyl-3-methylimidazolium chloride ionic liquids as well as for (ethanol + 1-ethyl-3-methyl imidazolium acetate) from literature obtaining a good reproducibility of the data. (C) 2015 Elsevier Ltd. All rights reserved.
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页码：8 / 16
页数：9
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