Vapor–liquid equilibrium (VLE) and density data for binary systems of branched alkanes + ethyl acetate are scarce in the literature. In this study, mixtures 3-methylpentane 2,3-dimethylbutane were investigated. Density measurements at atmospheric pressure performed using a vibrating tube meter 293.15, 298.15 303.15 K. Large positive excess molar volumes calculated correlated Redlich–Kister-type...

Separation of glycols with close boiling points and relatively high viscosity at their melting point is a challenge in the production purity products downstream biorefinery processes. In this work, efficiency layer melt crystallization process acetone as assisting solvent was evaluated for mixture monoethylene glycol 1,2-pentanediol. Solid-liquid equilibrium measured modelled NRTL modified UNIF...

Liquid-liquid equilibria for the (water + lactic acid + benzyl alcohol or p-xylene) ternary systems were investigated at atmospheric pressure and in the temperature range from 298.15-318.15 K. The studied systems exhibit two types of liquid-liquid equilibrium (LLE) behavior. The system consisting of benzyl alcohol displays type-1 LLE behavior, while a type-2 behavior is exhibited by th...

In this paper we propose a framework for Model-based Sequential Optimal Design of Experiments to assist experimenters involved in Vapor-Liquid equilibrium characterization studies systematically construct thermodynamically consistent models. The approach uses an initial continuous optimal design obtained via semidefinite programming, and then iterates between two stages (i) model fitting using ...

Further to Part I of our study glycol ether binary mixtures [Dimitrov, O.; Ind. Eng. Chem. Res. 2021, 60, 9602−9612], this second part is concentrated around the vapor–liquid equilibrium (VLE) modeling involving three ethers previously studied experimentally. The authors propose use NRTL-PR model for representation these nonideal mixtures. main difficulties related very low vapor pressures and ...

Abstract To separate the azeotropic mixture n-butyl acetate and n-butanol by liquid–liquid extraction, three ionic liquids (ILs) 1-ethyl-3-methylimidazolium dihydrogen phosphate ([Emim]H2PO4), 1-butyl-3-methylimidazolium ([Bmim]H2PO4) 1-hexyl-3-methylimidazolium ([Hmim]H2PO4) were adopted as extractants. The equilibrium data for ternary mixtures (n-butyl acetate + n-butanol + [Emim]H2PO4/[Bmim]...

The separation of benzene and cyclohexane azeotrope is one the most challenging processes in petrochemical industry. In this paper, deep eutectic solvents (DES) were used as for cyclohexane. DES1 (1:2 mix tetrabutylammonium bromide (TBAB) levulinic acid (LA)), DES2 TBAB ethylene glycol (EG)) DES3 ChCl (choline chloride) LA) entrainers, vapor-liquid equilibrium (VLE) measurements at atmospheric ...