Phase behaviour and thermodynamic modelling of the ternary system (carbon dioxide + ε-caprolactone + chloroform)

Girardi, Davi G.L.; Mayer, Diego A.; Rebelatto, Evertan A.; Lanza, Marcelo; Oliveira, J. Vladimir

doi:10.1016/j.jct.2020.106381

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…Experimental phase equilibrium measurements for the systems investigated were carried out in a variable-volume cell with visualization capability, following the synthetic visual method. It is important to highlight that the experimental unit and the procedure employed in this work have been validated in previous studies and applied to different systems. ,− Briefly, the procedure involves preparing the sample, assembling the equilibrium visualization cell, and performing visual analysis to obtain the data (Figure ). The apparatus consists of a high-pressure balance cell with variable volume and two sapphire windows.…”

Section: Methodsmentioning

confidence: 99%

Phase Equilibrium and Thermodynamic Modeling of 2-Methyltetrahydrofuran-3-one, Carbon Dioxide, and Lauric Acid Systems

Barros,

Rebelatto,

Mayer

et al. 2024

J. Chem. Eng. Data

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In this study, the phase equilibrium behavior of the ternary system (CO 2 + MeTHF-3-one + lauric acid) was investigated to provide insights into the enzymatic synthesis of sugar-based surfactants. Experimental data were obtained over the 313.15 to 343.15 K temperature range and at pressures of up to 13.02 MPa using a static synthetic method with a variable volume visualization cell. Three different concentrations of lauric acid for MeTHF-3-one, 0.3%, 1.3%, and 2.5 mol %, were examined. Vapor− liquid transitions were successfully observed and modeled by the Peng−Robinson equation of state with the PR-vdW2 variant. Adding lauric acid did not impact the transition pressures compared with CO 2 -MeTHF-3-one binary systems. The LCST behavior type, with increasing transition pressures as temperatures increased, was consistent across all systems studied.

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