Effect of interaction of thenoyltrifluoroacetone with neutral oxo-donors in the synergistic extraction of tervalent actinides.
The interaction of HTTA with TBP, DOSO, DBBP and TOPO in xylene has been studied by a spectrophotometric method. The complex species formed is HTTA. S (where S is a neutral donor) and the equilibrium constants for the formation of the species follow the order TOPO > DBBP > DOSO > TBP. After application of a correction for the HTTA-S interaction, the free HTTA and S concentrations in the organic phase were calculated. Plots of log D vs. log [HTTA] for the tervalent actinides Am, Cm, Bk and Cf gave straight lines with a slope of 3 only after application of the interaction correction, otherwise curves with slopes varying from 3 to 2 were found. The equilibrium constants of the organic phase synergistic reactions of the tervalent actinides are found to be approximately 10% higher after application of the HTTA-S interaction correction.
Mathur
J N
JN
Radiochemistry Division, Bhabha Atomic Research Centre, Bombay-400 085, India.
Khopkar
P K
PK