THE SOLVENT-EXTRACTION OF AMERICIUM(III) IN HNO3 SOLUTIONS BY 2,6-BIS[(DIPHENYLPHOSPHINO)METHYL]PYRIDINE N,P,P' TRIOXIDE

Authors
BOND EM ENGELHARDT U DEERE TP RAPKO BM PAINE RT FITZPATRICK JR
Citation
Em. Bond et al., THE SOLVENT-EXTRACTION OF AMERICIUM(III) IN HNO3 SOLUTIONS BY 2,6-BIS[(DIPHENYLPHOSPHINO)METHYL]PYRIDINE N,P,P' TRIOXIDE, Solvent extraction and ion exchange, 15(3), 1997, pp. 381-400
Citations number
34
Categorie Soggetti
Chemistry
Journal title
Solvent extraction and ion exchange → ACNP
ISSN journal
07366299
Volume
15
Issue
3
Year of publication
1997
Pages
381 - 400
Database
ISI
SICI code
0736-6299(1997)15:3<381:TSOAIH>2.0.ZU;2-4
Abstract
The liquid/liquid extraction of Am(III) from nitric acid solutions wit h chloroform solutions of 2,6 bis[(diphenylphosphino)methyl]pyridine N ,P,P' trioxide (ENOPOPO) is examined. Americium(III) is efficiently ex tracted from aqueous solutions at high nitric acid concentrations (D-A m>3000 at 6M HNO3) and can be totally back extracted from the organic phase at 0.01M HNO3. The ligand dependency data suggest that two ligan d molecules are coordinated to the americium. Additional aspects of th e extraction mechanism are described.