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