Work

Vapor–Liquid Equilibrium for the Separation of the Close-Boiling Mixture Methylcyclohexane–Toluene with Dimethyl Isosorbide as a Biobased Entrainer and 1-Butylpyrrolidin-2-one as a Greener Entrainer

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide In this work, dimethyl isosorbide (DMI) and 1-butylpyrrolidin-2-one (NBP), as biobased and greener organic solvents, were used for the first time as entrainers in extractive distillation to separate a close-boiling mixture of methylcyclohexane and toluene. Vapor–liquid equilibrium (VLE) data were collected for pseudoternary mixtures consisting of methylcyclohexane and toluene in the presence of DMI and NBP at various entrainer-to-feed ratios (E/F) and pressures. The VLE measurements were conducted by using a Fischer Labodest VLE602 ebulliometer, and the thermodynamic consistency of the data was verified by using the Van Ness test. Both DMI and NBP were found to increase the relative volatility of methylcyclohexane to toluene, successfully eliminating close-boiling behavior. Compared to benchmark entrainers, both outperformed 1-methylpyrrolidin-2-one (NMP) and sulfolane under certain conditions. In comparison with other green entrainers, DMI and NBP showed similar performance to gamma-valerolactone (GVL) and Cyrene under specific conditions. The VLE data were accurately correlated by using the nonrandom two-liquid (NRTL) model.

Source: Industrial & Engineering Chemistry Research

DOI: 10.1021/acs.iecr.5c01616

Authors: Dhoni Hartanto, Boelo Schuur, Matthijs Ammerlaan, Anton A. Kiss, André B. de Haan

Institutions: State University of Semarang, Delft University of Technology, University of Twente

Language: English

Topic: Phase Equilibria and Thermodynamics

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funder: Lembaga Pengelola Dana Pendidikan