Acetone + 1-ethyl-3-methylimidazolium acetate phase diagram: A correlation challenge

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/125041
Información del item - Informació de l'item - Item information
Title: Acetone + 1-ethyl-3-methylimidazolium acetate phase diagram: A correlation challenge
Authors: Marcilla, Antonio | Olaya, Maria del Mar | Carbonell Hermida, Paloma | Wojtczuk, Marta K. | Rodríguez, Héctor | Rodil, Eva | Soto, Ana
Research Group/s: Procesado y Pirólisis de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos
Keywords: Acetone | Ionic liquid | Equilibrium | NRTL | Correlation
Knowledge Area: Ingeniería Química
Issue Date: 11-Feb-2022
Publisher: Elsevier
Citation: Fluid Phase Equilibria. 2022, 557: 113419. https://doi.org/10.1016/j.fluid.2022.113419
Abstract: Several physical properties and the isobaric vapour-liquid equilibria at 101.32, 50, and 30 kPa were measured for the binary system consisting of acetone and the ionic liquid 1-ethyl-3-methyl-imidazolium acetate. Liquid-liquid equilibrium data were also measured at temperatures from 298.15 up to 328.35 K and atmospheric pressure. An hourglass-shaped miscibility gap was found. The simultaneous correlation of both VLE and LLE regions at 101.32 kPa was addressed. The NRTL model, considering different options to formulate the temperature dependence of the parameters, was tested and found unable to correlate the whole set of equilibrium data. A detailed analysis of the excess Gibbs energy demonstrated the limitations of the classical equation and allowed the definition of a new model with a correction term. A unique set of parameters were used to simultaneously correlate both sets of equilibrium data with very low deviations from experimental data. Moreover, the corrected NRTL function overcomes some uncertainty problems that may occur in liquid-liquid equilibrium calculations.
Sponsor: The authors would like to thank “Generalitat Valencia: Consellería de Educación, Investigación, Cultura y Deporte” for the PhD grant (ACIF/2019/040) and Xunta de Galicia for support through project ED431B 2020/021. M.K.W. is grateful to the Erasmus + programme of the European Union for the award of a mobility traineeship.
URI: http://hdl.handle.net/10045/125041
ISSN: 0378-3812 (Print) | 1879-0224 (Online)
DOI: 10.1016/j.fluid.2022.113419
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2022 Elsevier B.V.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.fluid.2022.113419
Appears in Collections:INV - GTP3 - Artículos de Investigación sobre Equilibrio entre Fases

Files in This Item:
Files in This Item:
File Description SizeFormat 
ThumbnailMarcilla_etal_2022_FluidPhaseEquilibria_final.pdfVersión final (acceso restringido)1,99 MBAdobe PDFOpen    Request a copy
ThumbnailMarcilla_etal_2022_FluidPhaseEquilibria_preprint.pdfPreprint (acceso abierto)1,85 MBAdobe PDFOpen Preview
ThumbnailMarcilla_etal_2022_FluidPhaseEquilibria_SI.pdfSupporting Information838,28 kBAdobe PDFOpen Preview


Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.