Chemical Equilibrium for the Reacting System Acetic Acid–Ethanol–Ethyl Acetate–Water at 303.15 K, 313.15 K and 323.15 K

Golikova, Alexandra; Samarov, Artemiy; Trofimova, Maya; Rabdano, Sevastyan O.; Toikka, Maria; Pervukhin, O. K.; Тойкка, А. М.

doi:10.1007/s10953-017-0583-1

Cited by 17 publications

(14 citation statements)

References 26 publications

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“…Moreover, previously we have measured the test mixtures with known composition with the help of NMR spectroscopy and gas chromatography, and the results were quantitatively the same for both methods (Table S2). This method was used previously in our works. , The standard uncertainty of NMR analysis averaged to be 0.005 mass fraction.…”

Section: Experimental Sectionmentioning

confidence: 99%

Study of Deep Eutectic Solvent on the Base Choline Chloride as Entrainer for the Separation Alcohol–Ester Systems

et al. 2018

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Choline chloride-based deep eutectic solvent (DES) was tested for the separation of azeotropic mixtures of ethanol−ethyl acetate, n-propanol−n-propyl acetate and nbutanol−n-butyl acetate via liquid−liquid extraction. The mixture of choline chloride with malonic acid with a molar ratio of 1:1 was used. Extraction experiments were conducted with the ternary mixture ethanol−ethyl acetate−DES at temperatures 293.15, 303.15, and 313.15 K and with ternary mixtures npropanol−n-propyl acetate−DES and n-butanol−n-butyl acetate−DES at 293.15, 303.15, 313.15, and 323.15 K. Liquid− liquid tie-lines for studied systems were determined. The extraction performance of DES was characterized with solute distribution coefficients and values of selectively respectively to alcohol. The influence of the alkyl chain length of the alcohol and ester on the phase equilibria was investigated. Experimental data were fitted using the nonrandom two liquids model.

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Section: Experimental Sectionmentioning

confidence: 99%

Study of Deep Eutectic Solvent on the Base Choline Chloride as Entrainer for the Separation Alcohol–Ester Systems

et al. 2018

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“…The discrepancy does not exceed 0.005 mol fractions. In general both of methods enable to accurately determine the compositions of mixtures, but NMR method takes less time in comparison with GC analysis [6].…”

Section: Ce Determinationmentioning

confidence: 99%

Chemical equilibrium for the reactive system propionic acid + ethanol + ethyl propionate + water at 303.15 and 313.15 K

Toikka

Sadaeva

Samarov

et al. 2017

Fluid Phase Equilibria

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a b s t r a c tChemical equilibrium for the quaternary system propionic acid þ ethanol þ ethyl propionate þ water was experimentally studied at 303.15 and 313.15 K and atmospheric pressure. The chemically equilibrium compositions were determined by gas chromatography and nuclear magnetic resonance analytical methods. It is shown that chemical equilibrium is reached both in homogeneous and heterogeneous area of composition of reactive mixture. The liquid e liquid equilibrium data for the surface of chemical equilibrium were obtained. The thermodynamic constants of chemical equilibrium at 303.15 and 313.15 K were determined.

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“…Mixtures of alcohol, ester, and DESs of given compositions were placed in a thermostat at a fixed temperature and stirred with a magnetic stirrer for 3–4 h. Standard uncertainty of the temperature is 0.05 K. To reach phase equilibrium and complete liquid-phase splitting, the systems under the study were kept for 12 h. The compositions of two coexisting phases were analyzed using 1 H NMR spectroscopy. NMR analysis has been described in detail in our previous studies. ,− Figure shows the 1 H NMR spectra of the studied DES. Peaks from protons in CH 2 and CH 3 groups of each compound in the organic and DES-rich phase were used for integration.…”

Section: Methodsmentioning

confidence: 99%

“…30 In this work, the NMR spectroscopy method is used. 31 This article is a continuation of a series of studies devoted to the research of the phase equilibrium and extraction properties of deep eutectic solvents based on ChCl and various HBDs in alcohol−ester systems. 27,32−36 Now, we present the results of exploring the degree of separation of mixtures of alcohols and propionic acid esters (ethyl propionate and n-propyl propionate), using a DES based on ChCl and glycerol/urea.…”

Section: ■ Introductionmentioning

confidence: 99%

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Liquid–Liquid Equilibrium of Alcohol (Ethanol or n-Propanol)–Ester (Ethyl or n-Propyl Propionate) Systems with a Deep Eutectic Solvent Based on Choline Chloride at 293.15 K

et al. 2020

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Deep eutectic solvents (DESs) formed by choline chloride and urea or glycerol were tested for the separation of azeotropic mixtures. The case study was the separation of ethanol− ethyl propionate and n-propanol−n-propyl propionate. For this aim, the experimental data of liquid−liquid equilibria (LLEs) were obtained at temperature 293.15 K and atmospheric pressure. Liquid−liquid tie lines were determined using NMR spectroscopy and analyzed. The extraction performance of DESs was characterized with distribution coefficients and values of selectivity to alcohol. Comparison of selectivity values in systems containing alcohols and esters with another DES formed by choline chloride and malonic acid was carried out. The NRTL model for LLE data correlation was used. The model is shown to give rather good estimates for the selectivity values.

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Chemical Equilibrium for the Reacting System Acetic Acid–Ethanol–Ethyl Acetate–Water at 303.15 K, 313.15 K and 323.15 K

Cited by 17 publications

References 26 publications

Study of Deep Eutectic Solvent on the Base Choline Chloride as Entrainer for the Separation Alcohol–Ester Systems

Study of Deep Eutectic Solvent on the Base Choline Chloride as Entrainer for the Separation Alcohol–Ester Systems

Chemical equilibrium for the reactive system propionic acid + ethanol + ethyl propionate + water at 303.15 and 313.15 K

Liquid–Liquid Equilibrium of Alcohol (Ethanol or n-Propanol)–Ester (Ethyl or n-Propyl Propionate) Systems with a Deep Eutectic Solvent Based on Choline Chloride at 293.15 K

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