Abstract
The extraction of lanthanide chlorides from 0.5 M NaCl solutions in three-component water-organic systems of 1 : 1 : 1 composition is studied using mixtures of trioctylamine and dicyclohexylamine salts with di-(2-ethylhexyl)phosphoric and caprylic acids and mixed dicyclohexylammonium salts as extractants. It is shown that the extractability of lanthanides in systems with various mixtures of binary extractants mainly increases with the increasing atomic number of the metal. The extraction selectivity when using mixtures of binary extractants is observed mainly in the extraction of heavy lanthanides, which can be used to separate heavy lanthanides from the light.
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Funding
Part of this research was carried out as part of the state assignment of the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, in the field of fundamental scientific research, as well as with financial support from the Russian Foundation for Basic Research (project no. 17-03-00263).
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Belova, V.V., Tsareva, Y.V. Extraction of Lanthanide Chlorides in Aqueous-Organic Two-Phase Systems with Salts of Tertiary and Secondary Amines. Theor Found Chem Eng 54, 1096–1101 (2020). https://doi.org/10.1134/S0040579520050073
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DOI: https://doi.org/10.1134/S0040579520050073