Vapor–Liquid Equilibrium for Binary of 1-Butanol + N,N-Dimethylacetamide and Methyl Isobutyl Ketone + N,N-Dimethylacetamide at 101.3 kPa

Abstract

Vapor–liquid equilibrium data for the binary systems of 1-butanol + N,N-dimethylacetamide and methyl isobutyl ketone + N,N-dimethylacetamide were measured at 101.3 kPa. The vapor–liquid equilibrium experiments of two systems were carried out in the modified Rose vapor recirculating-type equilibrium still. Van Ness and Herington tests were used to check the thermodynamic consistency of the experimental data. After meeting the thermodynamic consistency test, the nonrandom two-liquid, universal quasichemical, and Wilson models were used for correlation and regression of the experimental data. The binary interaction parameters of each model for the two binary systems were obtained. Comparing the equilibrium temperature and vapor-phase mole fraction for the experimental value and the calculated value, it shows that the two models had a good correlation with the experimental data.

Correlation and Prediction of Isobaric Vapor–Liquid Equilibria of Binary and Ternary Systems Containing Oxygenated Biofuel Compounds (Butan-2-one + 2-Methylpropan-1-ol + Cyclopentanone) at Atmospheric Pressure

“…In both studies, equilibrium data were correlated using the Wilson, NRTL, and UNIQUAC models, and good agreement was obtained with these three models. Ma et al 17 and Wang et al 18 measured the isobaric VLE of binary systems and used the Van Ness and Herington tests to check the thermodynamic consistency of the experimental data. Zhou et al 19 determined phase equilibrium data for binary and ternary systems of isoamyl alcohol, isoamyl acetate, and dimethyl sulfoxide.…”

Isobaric Vapor–Liquid Equilibrium of Binary Systems of 1-Pentanol + Butyl Butyrate, 1-Pentanol + N-Formylmorpholine, and p-Xylene + Butyl Butyrate at 101.3 kPa

“…Near-boiling or azeotropic systems are often separated by extractive distillation, and the choice of solvent determines the separation efficiency. − In extractive distillation, the selection of the best solvent can not only improve the purity of the product but also reduce the energy consumption of the system and save cost. At present, many methods can be used in solvent screening, the empirical method, experimental determination method, , group contribution method, , COSMO-RS model method, , etc. The results of the experimental measurement are the most reliable.…”

Isobaric Vapor–Liquid Equilibrium of Isoamyl Alcohol, Cyclohexane, n-Hexane, and the n-Heptane + Isoamyl Butyrate Binary System at 101.3 kPa

“…In this work, three common entrainers of isoamyl butyrate and its reactant (isoamyl alcohol) were studied. The isobaric VLE data of four binary systems, isoamyl alcohol + isoamyl butyrate, cyclohexane + isoamyl butyrate, n -hexane + isoamyl butyrate, and n -heptane + isoamyl butyrate, are determined using a modified Rose vapor recirculating-type equilibrium still. − The Fredenslund test method and Van Ness point test method were used to test the thermodynamic consistency of the experimental VLE data. − Finally, Aspen Plus was used to regress the binary interaction parameters (BIPs) of the three activity coefficient models of NRTL, UNIQUAC, and Wilson. − The relative volatility of the binary system was accurately calculated, which provided data support for process simulation for selecting the best entrainer in the synthesis of isoamyl butyrate.…”