4 years ago

Extraction and sorption preconcentration of rhenium with the use of 2-phosphorylphenoxyacetamides

A. Yu. Tsivadze, I. P. Kalashnikova, A. N. Turanov, V. K. Karandashev, V. E. Baulin


Interfacial distribution of micro amount of ReO4 - between aqueous solutions of mineral acids and solutions of 2-phosphorylphenoxyacetamides in dichloroethane has been studied. Stoichiometry of extracted complexes has been determined; the effect of HNO3, HCl, and H2SO4 concentration in aqueous phase, extractant structure, and organic solvent nature on the efficiency of ReO4 - ions transfer into organic phase has been considered. It has been shown that Re(VII) can be selectively recovered and concentrated with complexing sorbent obtained by the noncovalent binding of 2-[2-(diphenylphosphoryl)-4-ethylphenoxy]-N,N-dioctylacetamide on the surface of macroporous polymer Amberlite XAD7HP.

Publisher URL: https://link.springer.com/article/10.1134/S0036023617090170

DOI: 10.1134/S0036023617090170

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