Chemical Equilibrium in the Propionic Acid - Ethanol - Ethyl Propionate - Water System and Extraction Processes With Participation of Deep Eutectic Solvents

Toikka, Maria; Sadaev, Alexey; Senina, Alina; Lobacheva, O. L.

doi:10.32362/2410-6593-2019-14-1-47-58

Cited by 6 publications

(8 citation statements)

References 20 publications

(4 reference statements)

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“…The principle of studying CE is similar to the technique of carrying out similar experiments described in our earlier articles. − Two chemical reactions take place in the system: acid + alcohol and ether + water. The remaining four binary subsystems are non-reactive.…”

Section: Methodsmentioning

confidence: 99%

Peculiarities of Chemical Equilibria in Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 318.15 K and 101.3 kPa

et al. 2023

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The study of chemical equilibria for the acetic acid−n-butyl alcohol−n-butyl acetate−water system at 318.15 K and 101.3 kPa is presented. New experimental data are obtained for chemically equilibrium states in homogeneous and heterogeneous regions with the use of gas chromatography analysis. Critical states corresponding to chemically equilibrium regions are discussed. All results are displayed on concentration diagrams in 3D and 2D versions (using variables α). As a result of comparing the obtained results with the literature data, the corresponding conclusions were drawn. For the correlation of experimental data, the model NRTL was applied. The analysis and calculation of concentration and thermodynamic equilibrium constants have been carried out. The model UNIFAC was used to calculate the thermodynamic constant.

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Section: Methodsmentioning

confidence: 99%

Peculiarities of Chemical Equilibria in Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 318.15 K and 101.3 kPa

et al. 2023

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“…The study of the VLE diagram was based on thermodynamic-topological analysis. This method is well-known and widely used to study the phase behavior of quaternary mixtures. − …”

Section: Resultsmentioning

confidence: 99%

Separation and Purification of Methyl Isobutyl Ketone from Acetone + Isopropanol + Water + Methyl Isobutyl Ketone + Methyl Isobutyl Carbinol + Diisobutyl Ketone Mixture

Mayevskiy

Фролкова

2020

ACS Omega

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The paper presents the results of the study of phase equilibrium in the system containing acetone, isopropanol, water, methyl isobutyl ketone, methyl isobutyl carbinol, and diisobutyl ketone. Mathematical modeling in AspenPlus V.10.0 was chosen as a method of studying. Thermodymanic-topological analysis was used to analyze the structure of the VLE diagram. The technique of studying the full composition diagram based only on a two-dimensional scan (determining the presence of a three-dimensional separatric manifold and distillation regions) was presented and demonstrated on the example of five components constituent of the mixture. It is shown that, in some cases, it is sufficient to study the two-dimensional scan of the phase diagram to predict its internal structure. Two separation flowsheets based on the use of direct and sharp distillation were considered, and the operating column parameters corresponding to minimum energy consumption were determined. The sharp distillation was proved to be less energy-intensive.

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“…Very good peak separation was achieved under these conditions. The method of internal normalization and the relative calibration were used to calculate the compositions of equilibrium liquid phases . The uncertainty in mole fraction was usually less than 0.03.…”

Section: Methodsmentioning

confidence: 99%

“…The method of internal normalization and the relative calibration were used to calculate the compositions of equilibrium liquid phases. 60 The uncertainty in mole fraction was usually less than 0.03. At least three analyses were made of each liquid composition.…”

Section: Introductionmentioning

confidence: 99%

Double Ternary Azeotrope in the Benzene + Perfluorobenzene + Water System at 101 kPa

et al. 2020

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The existence of two ternary azeotropes in a ternary system was experimentally confirmed for the first time. The boiling point and the composition of azeotropes benzene + water, perfluorobenzene + water, and benzene + perfluorobenzene + water (with a minimum boiling temperature) as well as the boiling point of the ternary azeotrope of the saddle type were measured at 101 kPa using distillation analysis, ebulliometric titration, and gas chromatography. The parameters of the NRTL-RK model were selected from the AspenPlus V.10.0 database, allowing an adequate description of the phase equilibrium in the system studied. Possible evolution of the VLE diagram under pressure change was discussed.

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Chemical Equilibrium in the Propionic Acid - Ethanol - Ethyl Propionate - Water System and Extraction Processes With Participation of Deep Eutectic Solvents

Cited by 6 publications

References 20 publications

Peculiarities of Chemical Equilibria in Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 318.15 K and 101.3 kPa

Peculiarities of Chemical Equilibria in Acetic Acid–n-Butyl Alcohol–n-Butyl Acetate–Water System at 318.15 K and 101.3 kPa

Separation and Purification of Methyl Isobutyl Ketone from Acetone + Isopropanol + Water + Methyl Isobutyl Ketone + Methyl Isobutyl Carbinol + Diisobutyl Ketone Mixture

Double Ternary Azeotrope in the Benzene + Perfluorobenzene + Water System at 101 kPa

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