Influence of the pressure, temperature, cation and anion on the volumetric properties of ionic liquids: New experimental values for two salts

被引：36

作者：

Regueira, Teresa ^{[1
]}

Lugo, Luis ^{[1
]}

Fernandez, Josefa ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Lab Propiedades Termofis, Dept Fis Aplicada, Fac Fis, E-15782 Santiago De Compostela, Spain

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2013年 / 58卷

关键词：

Ionic liquid; High pressure; Density; Isothermal compressibility; Isobaric thermal expansion coefficient; ALKYL CHAIN-LENGTH; THERMOPHYSICAL PROPERTIES; PHYSICOCHEMICAL PROPERTIES; THERMODYNAMIC PROPERTIES; PHYSICAL-PROPERTIES; SURFACE-TENSION; 1-ETHYL-3-METHYLIMIDAZOLIUM ETHYLSULFATE; INFINITE DILUTION; CARBON-DIOXIDE; ELECTROCHEMICAL PROPERTIES;

D O I：

10.1016/j.jct.2012.10.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental densities of two ionic liquids (ILs), 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C(4)C(1)Pyrr][NTf2]) and 1-(2-methoxyethyl)-1-methyl-pyrrolidinium tris(pentafluoroethyl)trifluorophosphate ([C(1)OC(2)C(1)Pyrr][(C2F5)(3)PF3]), were measured over a broad temperature and pressure range, i.e. from (278.15 to 398.15) K and up to 120 MPa, respectively. The isobaric thermal expansion coefficient of the two ILs was determined from these measurements finding a non-monotonous behaviour over the entire pressure range. The density values obtained were used to analyse the prediction ability of the methods proposed by Gardas and Coutinho and by Jacquemin et al. Furthermore, the influence of the cation and anion structure on the densities and the isothermal compressibilities was analyzed, also considering literature values. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：440 / 448

页数：9

共 105 条

[1]

AlNashef IM, 2003, ACS SYM SER, V856, P509

[2] Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure [J].