Thermophysical properties of phosphonium-based ionic liquids
authors Bhattacharjee, A; Lopes-da-Silva, JA; Freire, MG; Coutinho, JAP; Carvalho, PJ
nationality International
journal FLUID PHASE EQUILIBRIA
author keywords Phosphonium; Ionic liquids; Density; Viscosity; Refractive index; Surface tension
keywords PRESSURE VOLUMETRIC PROPERTIES; TRANSPORT-PROPERTIES; SURFACE-TENSION; PHYSICOCHEMICAL PROPERTIES; REFRACTIVE-INDEX; CARBON-DIOXIDE; 1-BUTYL-3-METHYLIMIDAZOLIUM METHYLSULFATE; ELECTROCHEMICAL PROPERTIES; THERMODYNAMIC PROPERTIES; IMIDAZOLIUM
abstract Experimental data for density, viscosity, refractive index and surface tension of four phosphonium-based ionic liquids were measured in the temperature range between (288.15 and 353.15) K and at atmospheric pressure. The ionic liquids considered include tri(isobutyl) methylphosphonium tosylate, [P-i(444) (1)][Tos], tri(butyl) methylphosphonium methylsulfate, [P-4441][CH3SO4], tri(butyl) ethylphosphonium diethylphosphate, [P-4442][(C2H5O)(2)PO2], and tetraoctylphosphonium bromide, [P-8888][Br]. Additionally, derivative properties, such as the isobaric thermal expansion coefficient, the surface thermodynamic properties and the critical temperatures for the investigated ionic liquids were also estimated and are presented and discussed. Group contribution methods were evaluated and fitted to the density, viscosity and refractive index experimental data. (C) 2015 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0378-3812
year published 2015
volume 400
beginning page 103
ending page 113
digital object identifier (doi) 10.1016/j.fluid.2015.05.009
web of science category Thermodynamics; Chemistry, Physical; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000356986500012
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journal impact factor 2.197
5 year journal impact factor 2.214
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