What question did this study set out to answer?

The aim is to explore the phase behavior of the R404A-acetone mixture and its efficiency in SCF extraction of acetone.

April 10, 2026

Phase Behavior of the Freon R404A–Acetone Binary System and SCF Extraction of Acetone from an Aqueous Solution by Freon R404A

Key Points

The aim is to explore the phase behavior of the R404A-acetone mixture and its efficiency in SCF extraction of acetone.
Analyzed phase behavior of a binary mixture of freon R404A and acetone at multiple temperatures.
Conducted SCF extraction of acetone from aqueous solutions at varying concentrations and pressures.
Studied the relationship between pressure and extraction efficiency in the binary system.
Observed type I–II phase behavior in the R404A-acetone mixture.
Increased extraction efficiency was noted as pressure approached the critical value at 356.15 K.
Efficient separation of acetone from aqueous solutions was demonstrated using the SCF extraction process.

Abstract

The phase behavior of a binary mixture of freon R404A and acetone was experimentally studied at temperatures of 356.15, 372.15, and 392.15 K. The mixture was found to exhibit type I–II phase behavior according to the Williams classification. Supercritical fluid (SCF) extraction was investigated as applied to the separation of acetone from 3.5 and 10 wt % aqueous solutions thereof. In the process carried out at a temperature of 356.15 K (82.85°C), the extraction efficiency was determined to increase as the pressure approached its critical value for the binary system under investigation.

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Cite This Study

Zaripov et al. (Mon,) studied this question.

synapsesocial.com/papers/69d894526c1944d70ce05411 https://doi.org/https://doi.org/10.1134/s1990793125701830

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