Mutual Solubilities between Ethylene Glycol and Organic Diluents: Gas Chromatography and NMR

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creativework.keywordsethylene glycol, organic diluents, phase equilibria, solubility
creativework.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.contributor.authorAtanassova M.
dc.contributor.authorKurteva V.
dc.date.accessioned2024-07-10T14:27:06Z
dc.date.accessioned2024-07-10T14:51:02Z
dc.date.available2024-07-10T14:27:06Z
dc.date.available2024-07-10T14:51:02Z
dc.date.issued2023-07-01
dc.description.abstractIn this work, the mutual solubilities of sets of organic diluents (CHCl3, C6H6, C2H4Cl2, CCl4, C6H12, and n-hexane) with the organic compound ethylene glycol are investigated via gas chromatography (GC). The experimental data measured for these binary organic systems are used to adjust the future nonaqueous systems for the solvent extraction of various metals with ligands. The obtained results showed that the solubility of ethylene glycol decreased in the order CHCl3 > C6H6 > C2H4Cl2 > CCl4(0%) ≈ C6H12 ≈ n-hexane. On the other hand, the solubility of the tested traditional organic diluents in ethylene glycol decreased in the following order: C6H6 > CHCl3 > C2H4Cl2 > n-hexane > C6H12 > CCl4. 1H NMR was also used as an analytic method in order to compare the obtained results for the samples showing significant solubility only, including an additional study with 1,2- or 1,3-propanediol. The enhanced solubility of the C6H6 compound in ethylene glycol was identified here as critical due to the GC technique, which will be without future consequences in chemical technology. Therefore, it was found that the best molecular diluent for the recovery of metals among the tested ones is C6H12, with a green protocol as the new paradigm, replacing the aqueous phase with another nonaqueous phase, i.e., a second organic diluent.
dc.identifier.doi10.3390/molecules28135121
dc.identifier.issn1420-3049
dc.identifier.scopusSCOPUS_ID:85164845609en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/849
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85164845609&origin=inward
dc.titleMutual Solubilities between Ethylene Glycol and Organic Diluents: Gas Chromatography and NMR
dc.typeArticle
oaire.citation.issue13
oaire.citation.volume28
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