Measurement and correlation of liquid - Liquid equilibria of three imidazolium ionic liquids with acetone and cyclohexane

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Título: Measurement and correlation of liquid - Liquid equilibria of three imidazolium ionic liquids with acetone and cyclohexane
Autor/es: Zhu, Zhaoyou | Xu, Ying | Feng, Taixi | Wang, Ningning | Liu, Kai | Fan, Haowen | Labarta, Juan A. | Wang, Yinglong | Gao, Jun | Wang, Longlong
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: Liquid-liquid equilibrium | Molecular scale | Radial distribution function | Ionic liquids | Binary interaction parameters | Thermodynamic models
Área/s de conocimiento: Ingeniería Química
Fecha de publicación: 15-ene-2020
Editor: Elsevier
Cita bibliográfica: Journal of Molecular Liquids. 2020, 298: 111947. doi:10.1016/j.molliq.2019.111947
Resumen: Ionic liquids (ILs) can be recycled as extractants for their low vapor pressure and volatility. More and more applications are applied to the separation of industrial organic matter. The industrial production of ILs has gradually been realized, which also widens the way for the application of ILs. In this work, the liquid-liquid extraction of cyclohexane-acetone azeotropic mixture with different ILs {1-butyl-3-methylimidazolium bis(trifluormethylsulfonyl), 1-butyl-3-methylimidazolium trifluoromethansulfonate and 1-butyl-3-methylimidazolium dicyanamide} is studied. The extraction mechanism is discussed based on the molecular scale. The relationship between hydrogen bond donor and acceptor between ILs and acetone is analyzed by COSMO-SAC. The interaction between molecules is optimized and calculated by Materials Studio 7.0. The extraction ability of ILs is analyzed by radial distribution function, and the experimental results are verified. The liquid-liquid equilibrium test is carried out at 298.15 K. Distribution and selectivity are indices used to judge the extraction efficiency of ILs. The NRTL model and UNIQUAC model are adopted to correlate the liquid-liquid equilibrium data. The results show that all of the two models can well correlate the experimental.
Patrocinador/es: This work is supported by the National Natural Science Foundation of China (No. 21776145), National Natural Science Foundation of China (No. 21676152).
URI: http://hdl.handle.net/10045/101537
ISSN: 0167-7322 (Print) | 1873-3166 (Online)
DOI: 10.1016/j.molliq.2019.111947
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2019 Elsevier B.V.
Revisión científica: si
Versión del editor: https://doi.org/10.1016/j.molliq.2019.111947
Aparece en las colecciones:INV - CONCEPT - Artículos de Revistas

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