Oxidation of Am(III) by Np(VII) in bicarbonate and carbonate solutions
Journal Article
·
· Radiochemistry
OSTI ID:171776
- Inst. of Physical Chemistry, Moscow (Russian Federation)
Neptunium(VII) oxidizes Am(III) to Am(IV), being reduced to Np(VI), in 1.5 M solutions of KHCO{sub 3}, NaHCO{sub 3}, KHCO{sub 3} + K{sub 2}CO{sub 3}, and NaHCO{sub 3} + Na{sub 2}CO{sub 3} at pH {le} 10.9. Excess of Np(VII) is unnecessary for complete conversion of Am(III) to Am(IV). No further oxidation of americium was observed upon treatment with excess Np(VII). The reaction is completed within less than 20-30 s at reagent concentrations of about 10{sup {minus}4} M. In 1.5 M K{sub 2}CO{sub 3} or Na{sub 2}CO{sub 3} solution a threefold excess of Np(VII) ensures quantitative formation of Am(VI).
- OSTI ID:
- 171776
- Journal Information:
- Radiochemistry, Journal Name: Radiochemistry Journal Issue: 3 Vol. 37; ISSN RDIOEO; ISSN 1066-3622
- Country of Publication:
- United States
- Language:
- English
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