Acetohydroxamic acid has been studied by optical absorbance spectroscopy as a complex forming reagent for the lighter trivalent lanthanides and actinides (Pu(III) and Am(III) in aqueous solution at 2.0 M (NaClO4) ionic strength. The highest stoichiomery in all the cases studied has been found to be a 1:4 metal-to-ligand ratio; formation of tetrhydroxamato apecies requires a high excess of the ligand and alkaline pH, Spectrophotometric monitoring confirmed the presence of Pu(III) by electrochemical reduction of Pu(IV) in the course of the pH titration experient. The formation constants can be used for optimization of processing flowsheets in the advanced PUREX process.
Revised: November 10, 2005 |
Published: November 1, 2003
Citation
Sinkov S.I., and G. Choppin. 2003.Acetohydroxamic Acid Complexes with Trivalent f-Block Metal Cations.Journal of Nuclear Science and Technology. PNWD-SA-5946.