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Extraction of Rare Earth Elements(III) with Picrolonic Acid Mixtures with Phosphoryl-Substituted Aza Podands


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Abstract

Extraction of rare earth element(III) (REE) ions from chloride solutions with picrolonic acid mixtures with phosphoryl-substituted aza podands in chloroform has been studied. A considerable synergetic effect observed has been caused by the formation of hydrophobic mixed-ligand complexes of REE. The stoichiometry of extracted complexes has been determined and extraction constants have been calculated. The effect of aqueous phase composition, organic solvent nature, and the structure of phosphoryl-substituted aza podands on the efficiency of REE(III) recovery into organic phase have been considered.

About the authors

A. N. Turanov

Institute of Solid-State Physics

Author for correspondence.
Email: turanov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432

V. K. Karandashev

Institute of Microelectronics Technology and High Purity Materials; National University of Science and Technology “MISIS”

Email: turanov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432; Moscow, 119991

A. V. Kharlamov

Institute of Chemical Reagents and High Purity Chemical Substances

Email: turanov@issp.ac.ru
Russian Federation, Moscow, 107076

N. A. Bondarenko

Institute of Chemical Reagents and High Purity Chemical Substances

Email: turanov@issp.ac.ru
Russian Federation, Moscow, 107076

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