Synergistic extraction of uranium (VI) with chelating-acidic organophosphorus extractants

Abstract

A study of the synergistic extration of U(VI) from H2SO4 solution with the chelating agent 1-phenyl-3-methyl-4-(2'-chlorobenzoyl)pyrazo-5-one together with di-(2-ethylhexyl)phosphoric acid and also mono-(2-ethylhexyl)-2-ethylhexylphosphate is described. The synergistic extration species is not an individual complex, but rather a mixture of uranyl complexes. The mechanisms of extration are discussed.

Key words: REACTION MECHANISM, URANIUM, BENZENE P, BENZENECARBOXYLIC ACID P, EQUILIBRIUM CONSTANT, PYRAZOLONE P, CHELATE COMPLEX EXTRACTION, SYNERGIC SOLVENT EXTRACTION, ETHYLHEXYL PHOSPHONIC ACID MONOETHYL HEXYLESTER, DI(ETHYLHEXYL) PHOSPHORIC ACID

CLC Number:

O612
TQ425

Cite this article

MAO JIAJUN;WANG LIJUAN;CHEN YUDE. Synergistic extraction of uranium (VI) with chelating-acidic organophosphorus extractants[J]. Acta Chimica Sinica, 1989, 47(6): 557-562.

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螯合-酸性磷萃取剂对铀(VI)的协同萃取