Liquid–liquid and liquid–liquid equilibrium for ternary system water–acetonitrile–cyclohexene at 298.15 K

Фролкова, А. К.; Zakharova, D. S.; Фролкова, А. К.; Balbenov, S. A.

doi:10.1016/j.fluid.2015.06.039

Cited by 18 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the thermodynamic models are of importance to the design and simulation of the separation processes, in the present work, the thermodynamic models of NRTL and UNIQUAC were used to fit the experimental tie-line data due to their excellent abilities. 17,18 The expressions of NRTL 19 and UNIQUAC 20…”

Section: Resultsmentioning

confidence: 99%

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

Chen

Gao

et al. 2017

J. Chem. Eng. Data

View full text Add to dashboard Cite

The phase equilibrium data for the ternary systems isobutyl acetate + {ethanol or methanol} + water were determined at temperatures of 303.15 and 323.15 K, and pressure of 101.3 kPa. Both Hand and Bachman methods were used to evaluate the validity of the experimental data in the present work. In addition, the nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) models were applied to fit the experimental tie-line data, and the binary interaction parameters of the thermodynamic models were fitted. The root-mean-square devation values obtained for the NRTL and UNIQUAC activity coefficient models are less than 0.0081, which indicates that the correlated results agree with the experimental data. Moreover, the distribution coefficients and selectivities were determined and discussed.

show abstract

Section: Resultsmentioning

confidence: 99%

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

Chen

Gao

et al. 2017

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…Another four systems have been studied using this method: water + aniline + cyclohexene + cyclohexanone; nitromethane + nonanol + decanol + water; hexane + aniline + water + decane. , In all systems the interior structure of splitting diagram was determined, and the mechanism of degeneration of three liquid phase region was revealed (if it had place to be) (Figure ). All predicted results are in a good agreement with experimental data.…”

Section: Mathematical Modelingmentioning

confidence: 99%

The Method of Study of Liquid–Liquid–Liquid Equilibrium in Quaternary Systems

Фролкова¹,

Akishina²,

Фролкова³

et al. 2017

J. Chem. Eng. Data

View full text Add to dashboard Cite

A method of studying of the liquid−liquid−liquid equilibrium (LLLE) region in quaternary systems was proposed. It includes four basic stages: the study of the tetrahedron scan; the determination of a composition of coexisting liquid phases in ternary constituents; the choice of conjugate composition and analysis of compositions of three liquid phases at adding conjugate composition; the prediction of the type of LLLE splitting area in a composition tetrahedron. Different ways of conjugate composition adding were proposed for different types of the splitting diagram. Five quaternary systems with different types of three liquid phase region were studied using mathematical modeling and nonrandom two-liquid model. The structure of the three-phase immiscibility region was predicted for all systems. It was found that the prediction results and experimental and calculated data are in a good agreement.

show abstract

“…Acetonitrile (AN) was used as solvent for reaction. However, the presence of AN complicates the separation flowsheet because of a number of azeotropes (three binary and one ternary) and region of three liquid phases (the distribution of catalyst between the liquid layers). − CHON having the highest boiling temperature (428.55 K) is always presented as a bottom product that negatively affects its purity. An attempt to replace AN with other solvents: dimethylsulfoxide, dimethylformamide, or dimethylacetamide were made .…”

Section: Introductionmentioning

confidence: 99%

“…Boiling Temperatures of Pure Components and Azeotropic Data (Experimental[11][12][13]21,22 and Calculated) for Systems CHEN + CNON + W + NMP (+AN) at 101.325 kPa…”

mentioning

confidence: 99%

Phase Equilibrium of Systems Cyclohexene + Water + Cyclohexanone + N-Methyl-2-pyrrolidone (+Acetonitrile)

2019

View full text Add to dashboard Cite

The paper presents the results of the study of phase equilibrium in the system formed in the reaction of cyclohexene oxidation (cyclohexene + water + cyclohexanone + solvent). Pure N-methyl-2-pyrrolidone or binary mixture acetonitrile + Nmethyl-2-pyrrolidone was considered as a solvent. The method of studying was mathematical modeling on the base of the nonrandom two-liquid model. Thermodynamic-topological analysis was used to analyze the structure of the vapor−liquid equilibrium diagram. The mixture separation flowsheets were proposed and parameters of column work were determined using simulation in Aspen Plus V.10.0. The possibility of isolation of the target component (cyclohexanone) without the use of special separation methods was proved. The results obtained showed the prospects of replacement of pure acetonitrile or previously proposed dimethylsulfoxide and dimethylacetamide by solvents considered.

show abstract

Liquid–liquid and liquid–liquid equilibrium for ternary system water–acetonitrile–cyclohexene at 298.15 K

Cited by 18 publications

References 25 publications

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

The Method of Study of Liquid–Liquid–Liquid Equilibrium in Quaternary Systems

Phase Equilibrium of Systems Cyclohexene + Water + Cyclohexanone + N-Methyl-2-pyrrolidone (+Acetonitrile)

Contact Info

Product

Resources

About