Vapor–Liquid Equilibrium for Methyl Acetate + Ethanol + 1,3-Dimethy-limidazoledimethyl Phosphate

Because of the azeotropic phenomenon, separating methyl acetate and ethanol is not an easy task. Extractive distillation is a suitable separation technique, and ionic liquid 1,3-dimethy-limidazoledimethyl phosphate ([MMIM]­[DMP]) and organic solvent dimethyl sulfoxide (DMSO) are chosen as the entrai...

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Bibliographic Details
Published inJournal of chemical and engineering data Vol. 68; no. 10; pp. 2629 - 2635
Main Authors Li, Feihu, Li, Mengyuan, Li, Qunsheng
Format Journal Article
LanguageEnglish
Published American Chemical Society 12.10.2023
Subjects
Vapor-Liquid Equilibria and Supercritical Fluid Equilibria
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Summary:Because of the azeotropic phenomenon, separating methyl acetate and ethanol is not an easy task. Extractive distillation is a suitable separation technique, and ionic liquid 1,3-dimethy-limidazoledimethyl phosphate ([MMIM]­[DMP]) and organic solvent dimethyl sulfoxide (DMSO) are chosen as the entrainers in this work. Vapor–liquid phase equilibrium experiments were conducted at 101.3 kPa. The nonrandom two-liquid model was selected to fit the experimental data, and it was in accordance with the calculated data. It can be concluded that [MMIM]­[DMP] and DMSO can eliminate the azeotropic phenomenon of methyl acetate + ethanol completely. The effect of [MMIM]­[DMP] for separation is much better than that of DMSO which proves tremendous potential for the application of ionic liquids.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.3c00386