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Interfacial Separation of Organic Phase Components in Systems Containing Aqueous Colloidal Solutions of Sodium Di-(2-Ethylhexyl)Phosphate

Interfacial separation of components of extractants based on di-(2-ethylhexyl)phosphoric acid (di-2EHPA) in toluene and a mixture of di-2EHPA with trioctylamine in toluene has been studied in the course of treatment with aqueous sodium hydroxide solutions yielding an organic phase and an aqueous col...

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Published in:	Colloid journal of the Russian Academy of Sciences 2021, Vol.83 (1), p.88-96
Main Authors:	Kuzmin, V. I., Leskiv, M. N., Peterson, I. V., Kuzmin, D. V., Gudkova, N. V., Bulavchenko, A. I.
Format:	Article
Language:	English
Subjects:	Chemistry Chemistry and Materials Science Colloids Diethylhexylphosphoric acid Hydrometallurgy NMR spectroscopy Photon correlation spectroscopy Polymer Sciences Separation Sodium hydroxide Sodium salts Surfaces and Interfaces Thin Films Toluene Trioctylamine
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creator	Kuzmin, V. I. Leskiv, M. N. Peterson, I. V. Kuzmin, D. V. Gudkova, N. V. Bulavchenko, A. I.
description	Interfacial separation of components of extractants based on di-(2-ethylhexyl)phosphoric acid (di-2EHPA) in toluene and a mixture of di-2EHPA with trioctylamine in toluene has been studied in the course of treatment with aqueous sodium hydroxide solutions yielding an organic phase and an aqueous colloidal solution of di-2EHPA sodium salt. Conditions have been found for the isolation of almost pure di-2EHPA and toluene, as well as di-2EHPA and a trioctylamine solution in toluene. The aqueous colloidal solutions have been studied by conductometry, dynamic light scattering, and 1 H-NMR spectroscopy. The considered systems are promising to be used in hydrometallurgy for improving parameters of extraction of metals and their concentrating in re-extracts.
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subjects	Chemistry Chemistry and Materials Science Colloids Diethylhexylphosphoric acid Hydrometallurgy NMR spectroscopy Photon correlation spectroscopy Polymer Sciences Separation Sodium hydroxide Sodium salts Surfaces and Interfaces Thin Films Toluene Trioctylamine
title	Interfacial Separation of Organic Phase Components in Systems Containing Aqueous Colloidal Solutions of Sodium Di-(2-Ethylhexyl)Phosphate
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