resumo
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.
palavras-chave
PRESSURE VOLUMETRIC PROPERTIES; TRANSPORT-PROPERTIES; SURFACE-TENSION; PHYSICOCHEMICAL PROPERTIES; REFRACTIVE-INDEX; CARBON-DIOXIDE; 1-BUTYL-3-METHYLIMIDAZOLIUM METHYLSULFATE; ELECTROCHEMICAL PROPERTIES; THERMODYNAMIC PROPERTIES; IMIDAZOLIUM
categoria
Thermodynamics; Chemistry; Engineering
autores
Bhattacharjee, A; Lopes-da-Silva, JA; Freire, MG; Coutinho, JAP; Carvalho, PJ
nossos autores
Arijit Bhattacharjee
Bolseiro de pós-Doutoramento
Mara Guadalupe Freire Martins
Investigador Coordenador
Pedro J. Carvalho
Professor AuxiliarGrupos
G4 - Materiais Renováveis e Economia Circular
G5 - Materiais Biomiméticos, Biológicos e Vivos
Projectos
Igy Technology: A Purication Platform using Ionic-Liquid-Based Aqueous Biphasic Systems (IGYPURTECH)
agradecimentos
This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FT UID /CTM /50011/2013), financed by national funds through the FCT/MEC and when applicable co-financed by FEDER under the PT2020 Partnership Agreement. P.J.C. and A.B. also acknowledge FCT for their postdoctoral grants SFRH/BPD/82264/2011 and SFRH/BPD/77858/2011, respectively. M.G. Freire acknowledges the European Research Council (ERC) for the Starting Grant ERC-2013-StG-337753. The authors also acknowledge CYTEC Industries Inc. for kindly supplying the ionic liquids investigated in this work.