Studies of solubility of dicarboxilic acid mixtures in organic solvents
DOI:
https://doi.org/10.15587/1729-4061.2015.39995Keywords:
purification, vanadium, copper, adipic, glutaric, succinic, solubility, acetone, hexane, ethyl acetateAbstract
Analysis of literary sources has resulted in the choice of the most perspective types of organic solvents for a technology of purifying mixtures of lower dicarboxylic acids from copper and vanadium compounds. We have obtained experimental data on the solubility of mixtures of lower dicarboxylic acids in acetone, ethyl acetate, and hexane. We have processed the data statistically and suggested a semi-empirical equation of solubility versus temperature. The calculated equation coefficients allowed determining the dependence of the dielectric constant of the studied solvents. The obtained data permit calculating the solubility of mixtures of lower dicarboxylic acids in a wide range of temperatures for other solvents by their physical and chemical properties. Comparing solution properties with the technological process conditions has shown that acetone (or other lower ketones) is an optimal solvent for purifying mixtures of lower dicarboxylic acids from copper and vanadium compounds.
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Copyright (c) 2015 Александр Васильевич Присяжный, Павел Анатольевич Козуб, Лидия Анатольевна Катковникова, Светлана Николаевна Козуб
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