ISSN:
1573-1111
Schlagwort(e):
Crown ethers
;
nitrobenzene
;
plutonium (IV)
;
solvent extraction
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract Ion-pair extraction behaviour of plutonium (IV) from varying concentrations of HCl solution was studied employing crown ethers (benzo-l5-crown-5 (B15C5), 18-crown-6, (18C6), dibenzo-18-crown-6 (DB18C6), dicyclohexano-18-crown-6, (DC18C6), dibenzo-24-crown-8 (DB24C8) and dicyclohexano-24-crown-8 (DCH24C8)) in nitrobenzene as the extractant. Ammonium metavanidate was used as the holding oxidant in the aqueous phase and the conditions necessary for the quantitative extraction of the tetravalent ion were found. The co-extraction of species of the type [HL+].[HPu(Cl) 6 − ] and [HL+]2·[Pu(Cl) 6 2− ] as ion-pairs (where L represents the crown ether) is suggested.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01044996
Permalink