Ternary liquid–liquid equilibrium of an azeotropic mixture (hexane + methanol) with different imidazolium-based ionic liquids at T = 298.15 K and 101.325 kPa

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Título: Ternary liquid–liquid equilibrium of an azeotropic mixture (hexane + methanol) with different imidazolium-based ionic liquids at T = 298.15 K and 101.325 kPa
Autor/es: Wen, Guilin | Bai, Wenting | Zheng, Fengbin | Reyes-Labarta, Juan A. | Ma, Yixin | Wang, Yinglong | Gao, Jun
Grupo/s de investigación o GITE: Computer Optimization of Chemical Engineering Processes and Technologies (CONCEPT)
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ingeniería Química
Palabras clave: LLE | ILs | Hexane | Methanol | NRTL | UNIQUAC
Área/s de conocimiento: Ingeniería Química
Fecha de publicación: 15-abr-2018
Editor: Elsevier
Cita bibliográfica: Fluid Phase Equilibria. 2018, 461: 51-56. doi:10.1016/j.fluid.2018.01.008
Resumen: The recovery and purification of methanol from its mixtures is of great importance; to this end, liquid-liquid extraction is an effective method for the separation of azeotropes. In this work, three imidazolium-based ionic liquids were used to separate a hexane-methanol azeotropic mixture, and the ternary liquid-liquid equilibria (LLE) data for the systems of hexane + methanol + [MIM][HSO4] (1-methylmidazole hydrogen sulfate), [BMIM][HSO4] (1-Butyl-3-methylimidazolium hydrogen sulfate), [BMIM][OTf] (1-Butyl-3-methylimidazolium trifluoromethansulfonate) were measured at 298.15 K and atmospheric pressure. The separation factor and distribution coefficient were calculated from the experimental LLE data to evaluate the separation performance. The influence of the anions and mono-/di-substituted hydrocarbon chains on the imidazolium cation ring of the LLE was investigated. The experimental LLE data were successfully correlated by non-random two liquid (NRTL) and universal quasi-chemical (UNIQUAC) models, and the binary interaction parameters were obtained.
Patrocinador/es: This work is supported by the National Natural Science Foundation of China (Project 21776145 and Project 21306093).
URI: http://hdl.handle.net/10045/73349
ISSN: 0378-3812 (Print) | 1879-0224 (Online)
DOI: 10.1016/j.fluid.2018.01.008
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2018 Elsevier B.V.
Revisión científica: si
Versión del editor: http://dx.doi.org/10.1016/j.fluid.2018.01.008
Aparece en las colecciones:INV - CONCEPT - Artículos de Revistas

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