Liquid-liquid measurement and correlation for separation of azeotrope (dimethyl carbonate and ethanol) with different imidazolium-based ionic liquids

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Título: Liquid-liquid measurement and correlation for separation of azeotrope (dimethyl carbonate and ethanol) with different imidazolium-based ionic liquids
Autor/es: Wang, Ping | Yan, Peisong | Reyes-Labarta, Juan A. | Gao, Jun | Xu, Dongmei | Zhang, Lianzheng | Wang, Yinglong
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 | Separation | Dimethyl carbonate | Ionic liquids | Ethanol
Área/s de conocimiento: Ingeniería Química
Fecha de publicación: 15-abr-2019
Editor: Elsevier
Cita bibliográfica: Fluid Phase Equilibria. 2019, 485: 183-189. doi:10.1016/j.fluid.2018.12.034
Resumen: For separating the azeotrope of dimethyl carbonate (DMC) and ethanol, four imidazolium-based ionic liquids were selected as extractants. The liquid-liquid equilibrium data for the ternary systems DMC + ethanol + ILs were determined at 298.15 K under pressure of 101.3 kPa. The effect of ILs anions and the alkyl chain length of the cations on the liquid-liquid phase behavior was investigated and discussed. Moreover, the distribution coefficient and selectivity were calculated and analyzed to evaluate the most suitable IL to separate the azeotrope of DMC and ethanol. Meanwhile, the interaction energies of ILs with DMC and ethanol were explored. The calculated results indicate that the adopted ILs have strong interactions with ethanol than with DMC. In addition, the NRTL activity coefficient model was adopted to correlate the measured experimental data and the optimum binary interaction parameters were obtained.
Patrocinador/es: This work was supported by the Shandong Provincial Key Research & Development Project (2018GGX107001), National Natural Science Foundation of China (Grant 21878178) and Project of Shandong Province Higher Educational Science and Technology Program (J18KA072).
URI: http://hdl.handle.net/10045/87434
ISSN: 0378-3812 (Print) | 1879-0224 (Online)
DOI: 10.1016/j.fluid.2018.12.034
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2018 Elsevier B.V.
Revisión científica: si
Versión del editor: https://doi.org/10.1016/j.fluid.2018.12.034
Aparece en las colecciones:INV - CONCEPT - Artículos de Revistas

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