S. Mishra et V. Chakravortty, EXTRACTION OF URANIUM(VI) BY THE BINARY MIXTURE OF ALIQUAT-336 AND PC88A FROM AQUEOUS H3PO4 MEDIUM, Hydrometallurgy, 44(3), 1997, pp. 371-376
In the extraction of uranium(VI) by 5% (v/v) Aliquat 336(R(3)R'NH2PO4)
, 5% (v/v) PC88A ((AH)(2)) and their binary mixture (1:1) in xylene fr
om 0.4-1.4 M aqueous H3PO4 solution, the distribution ratio decreases
gradually with increasing acidity. A synergistic effect is observed ov
er the entire range of aqueous H3PO4 concentration, which may be attri
buted to the formation of mixed adduct species, UO(2)A(2)(R(3)R'N)(2)(
H2PO4)(2) in the extracted organic phase.