Solvent extraction of europium and americium into phenyltrifluoromethyl sulfone by using synergistic mixture of hydrogen dicarbollylcobaltate and N,N,N′,N′-tetraethyl-2,6-dipicolinamide

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 284; no. 3; pp. 629 - 633
• Main Authors: Makrlík, E., Vaňura, P., Selucký, P., Babain, V. A., Smirnov, I. V.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2010; Springer
• Subjects: Americium; Cationic; Chemistry; Chemistry and Materials Science; Cytokinins; Diagnostic Radiology; Europium; Hadrons; Heavy Ions; Hydrogen; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Rare earth metals; Solvent extraction; Stability constants; Sulfones; Americium; Extraction; Dicarbollylcobaltate; tetraethyl-2,6-dipicolinamide; Europium; Phenyltrifluoromethyl sulfone; Complexes
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-010-0517-5

Extraction of microamounts of europium and americium by a phenyltrifluoromethyl sulfone (FS 13) solution of hydrogen dicarbollylcobaltate (H + B − ) in the presence of N,N,N′,N′ -tetraethyl-2,6-dipicolinamide (TEtDPA, L) has been investigated. The equilibrium data have been explained assuming that the species HL + , and (M 3+  = Eu 3+ , Am 3+ ) are extracted into the organic phase. The values of extraction and stability constants of the cationic complex species in FS 13 saturated with water have been determined. It was found that the stability constants of the corresponding complexes and , where n  = 2, 3 and L is TEtDPA, in the mentioned FS 13 medium are comparable.