EXPERIMENTAL STUDY OF THE PROPERTIES OF PHASE EQUILIBRIUM OF PHENYLAMINE IN A SUPERCRITICAL SOLVENT
Rubrics: 1. CHEMISTRY
Authors:
1.
KNITU
2.
KNITU
3.
KNITU
4.
KNITU
Type:
Article
Pages:
from 16
to 21
Status:
In work
Language:
Russian
Keywords:
PHASE DIAGRAM, CRITICAL CURVE, SOLUBILITY, SUPERCRITICAL FLUID
Abstract (English):
The results of the experiments show that the phase behavior of phenylamine at high pressures and temperatures differs significantly from the behavior under normal conditions. In particular, a significant shift of the equilibrium curves is observed, which can be associated with a change in the interactions between phenylamine molecules and carbon dioxide. These data can be useful for optimizing extraction and separation processes where carbon dioxide acts as a solvent. Analysis of the obtained data allows for a deeper understanding of the mechanisms of interaction between the components in sub- and supercritical conditions, as well as for predicting the behavior of other similar systems. The use of a high-pressure optical cell demonstrates reliable results for accurate determination of the VLE properties under various conditions. This work opens the way for further research aimed at studying the phase transformations of other organic compounds in supercritical media. This can lead to the development of more efficient technologies in the chemical and petrochemical industries. These studies can also contribute to more environmentally friendly methods of separation and purification of substances, reducing the need for toxic solvents. This paper presents new experimental data on the properties of liquid-vapor phase equilibrium at four selected isotherms: 313.15; 333.15; 353.15 and 443.15 K, covering the pressure range from 0.8 to 32.4 MPa. Samples were taken from both equilibrium phases, and their composition was analyzed using the gravimetric method.
The results of the experiments show that the phase behavior of phenylamine at high pressures and temperatures differs significantly from the behavior under normal conditions. In particular, a significant shift of the equilibrium curves is observed, which can be associated with a change in the interactions between phenylamine molecules and carbon dioxide. These data can be useful for optimizing extraction and separation processes where carbon dioxide acts as a solvent. Analysis of the obtained data allows for a deeper understanding of the mechanisms of interaction between the components in sub- and supercritical conditions, as well as for predicting the behavior of other similar systems. The use of a high-pressure optical cell demonstrates reliable results for accurate determination of the VLE properties under various conditions. This work opens the way for further research aimed at studying the phase transformations of other organic compounds in supercritical media. This can lead to the development of more efficient technologies in the chemical and petrochemical industries. These studies can also contribute to more environmentally friendly methods of separation and purification of substances, reducing the need for toxic solvents. This paper presents new experimental data on the properties of liquid-vapor phase equilibrium at four selected isotherms: 313.15; 333.15; 353.15 and 443.15 K, covering the pressure range from 0.8 to 32.4 MPa. Samples were taken from both equilibrium phases, and their composition was analyzed using the gravimetric method.
Keywords:
PHASE DIAGRAM, CRITICAL CURVE, SOLUBILITY, SUPERCRITICAL FLUID
PHASE DIAGRAM, CRITICAL CURVE, SOLUBILITY, SUPERCRITICAL FLUID
