Affiliation:
1. Yu.A. Ossipyan Institute of Solid State Physics of the Russian Academy of Sciences
2. Institute of Microelectronics Technology and High Pure Materials of the Russian Academy of Sciences
3. A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
Abstract
A method for the synthesis of 4,5-diphosphorylated 1,2,3-triazoles has been developed, and the extraction of U(VI), Th(IV), and lanthanides(III) from nitric acid solutions by them was studied. A synergistic effect was found in the extraction of metal ions with mixtures of 4,5-diphosphorylated 1,2,3-triazoles and dinonylnaphthalenesulfonic acid. The stoichiometry of the extracted complexes was determined, and the influence of the structure of the extractant and the concentration of HNO3 in the aqueous phase on the efficiency of the extraction of metal ions into the organic phase was considered. It was established that 4,5-diphosphorylated 1,2,3-triazole with the octyl substituent at nitrogen atom has the highest extraction ability with respect to actinides and lanthanides in nitric acid media.
Publisher
The Russian Academy of Sciences