Electrochemical oxidation of 243Am(III) in nitric acid by a terpyridyl-derivatized electrode
A high surface area, tin-doped indium oxide electrode surface-derivatized with a terpyridine ligand has been applied to the oxidation of trivalent americium to Am(V) and Am(VI) in nitric acid. Potentials as low as 1.8 V vs. the saturated calomel electrode are used, 0.7 V lower than the 2.6 V potential for one-electron oxidation of Am(III) to Am(IV) in 1 M acid. This simple electrochemical procedure provides, for the first time, a method for accessing the higher oxidation states of Am in non-complexing media for developing the coordination chemistries of Am(V) and Am(VI) and, more importantly, for separation of americium from nuclear waste streams.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DE-AC07-99ID13727
- OSTI ID:
- 1248209
- Report Number(s):
- INL/JOU-15-35686
- Journal Information:
- Science, Vol. 350, Issue 6261; ISSN 0036-8075
- Country of Publication:
- United States
- Language:
- English
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