Salt Effect on the Vapor-Liquid Equilibrium of Methyl Acetate + Methanol at 298.15 K

Martin, Maria C.; Cocero, Marı́a José; Mato, Fidel

doi:10.1021/je00015a031

Cited by 11 publications

(10 citation statements)

References 8 publications

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“…One key issue in the extractive distillation process is to select an appropriate entrainer. In separating methyl acetate and methanol, some entrainers of organic solvent (e.g., amine, N , N -dimethylformamide, dimethyl sulfoxide, and N -methylpyrrolidone , ) and inorganic salt (e.g., LiC1, CaC1 2 , Ca(NO 3 ) 2 , ZnNO 3 , and MgCl 2 − ). The volatility of solvent and the corrosion and difficulty in recycling of salts are the problems.…”

Section: Introductionmentioning

confidence: 99%

Determination of Vapor–Liquid Equilibrium of Methyl Acetate + Methanol + 1-Alkyl-3-methylimidazolium Dialkylphosphates at 101.3 kPa

Cao

Chen

et al. 2017

J. Chem. Eng. Data

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Isobaric vapor−liquid equilibrium (VLE) values at 101.3 kPa of binary methyl acetate + methanol, binary methyl acetate + ionic liquids (ILs), binary methanol + ILs, and ternary methyl acetate + methanol + ILs are measured, where the ILs are 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]), 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM]-[DEP]), and 1-butyl-3-methylimidazolium dibutylphosphate ([BMIM][DBP]). The azeotropic point of methyl acetate + methanol is removed with addition of ILs, and [MMIM][DMP] gives the largest effect, followed by [EMIM][DEP] and [BMIM][DBP]. Salting-out effect from ILs is observed where the relative volatility of methyl acetate is increased. The minimum amount of such phosphate ILs required to break the azeotropic point is remarkably less than that of some other ILs; also such phosphate ILs are fluorine-free and easily prepared with cheaper starting materials. The experimental VLE data are correlated well with electrolyte NRTL model.

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Section: Introductionmentioning

confidence: 99%

Determination of Vapor–Liquid Equilibrium of Methyl Acetate + Methanol + 1-Alkyl-3-methylimidazolium Dialkylphosphates at 101.3 kPa

Cao

Chen

et al. 2017

J. Chem. Eng. Data

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“…It is difficult to separate them by conventional separation method since they form a minimum azeotrope at atmospheric pressure. Traditional organic solvents [10] and solid salts [11][12][13][14] have been used as entrainers to separate methyl acetate and methanol mixture in extractive distillation process. As environment-friendly solvents, ILs are compelling alternatives to volatile organic solvents and caustic solid salts.…”

Section: Introductionmentioning

confidence: 99%

Isobaric vapor–liquid equilibrium for methyl acetate+methanol system containing different ionic liquids at 101.3kPa

Zhang

et al. 2016

Fluid Phase Equilibria

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A B S T R A C TIsobaric vapor-liquid equilibrium (VLE) data for ternary systems of methyl acetate + methanol containing three ionic liquids (ILs) were measured at 101.3 kPa. The investigated ILs were 1-hexyl-3-methylimidazolium chloride ([HMIM][Cl]), 1-benzyl-3-methylimidazolium chloride ([BzMIM][Cl]), and 1-hexyl-3-methylimidazolium bromide ([HMIM][Br]). The results indicate that the addition of ILs can give rise to the increase of the relative volatility of methyl acetate to methanol. Besides, the more ILs, the larger the relative volatility. All the three investigated ILs can eliminate the azeotropic point of methyl acetate and methanol, and the separation effect follows the order: [HMIM][Cl] > [BzMIM][Cl] > [HMIM] [Br]. Additionally, the measured VLE data are well correlated with NRTL model.

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“…It is evident that the selection of a suitable entrainer is crucial in extractive distillation [2]. Traditional entrainers such as organic solvents [3] or inorganic salts [4][5][6][7] have been employed in separating the mixture of methyl acetate and methanol, but they often make the process complicated, long and huge emerge consumption. * Corresponding Author: Wenxiu Li, Email address: wenxli@126.com, Fax: 86-024-89383736…”

Section: Introductionmentioning

confidence: 99%

“…The separation effect of [C4 MIM][Cl] on the methyl acetate and methanol system is compared with those of ILs reported in literature. The minimum mole fraction of [C 4 MIM][Cl] to break the azeotrope at 327.31 K is 0.124 calculated using NRTL model with parameters listed in Table 7, since Dohnal [16] has compared the azeotrope breaking capacity of previous reported ILs at the same condition.…”

mentioning

confidence: 99%

Separation of methyl acetate+methanol azeotropic mixture using ionic liquids as entrainers

Zhang

et al. 2015

Fluid Phase Equilibria

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Salt Effect on the Vapor-Liquid Equilibrium of Methyl Acetate + Methanol at 298.15 K

Cited by 11 publications

References 8 publications

Determination of Vapor–Liquid Equilibrium of Methyl Acetate + Methanol + 1-Alkyl-3-methylimidazolium Dialkylphosphates at 101.3 kPa

Determination of Vapor–Liquid Equilibrium of Methyl Acetate + Methanol + 1-Alkyl-3-methylimidazolium Dialkylphosphates at 101.3 kPa

Isobaric vapor–liquid equilibrium for methyl acetate+methanol system containing different ionic liquids at 101.3kPa

Separation of methyl acetate+methanol azeotropic mixture using ionic liquids as entrainers

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