Oxidation of UO2 in molten alkali-metal carbonate mixtures: Formation of uranates and diuranates / Volkovich V,Griffiths TR,Fray DJ,Fields M,Wilson PD // JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS. - 1996. - V. 92, l. 24. - P. 5059-5065.

ISSN/EISSN:

0956-5000 / нет данных

Type:

Article

Abstract:

The oxidation of UO2 in a variety of alkali-metal carbonate melts has been studied in the temperature range 723-1123 K. UO3 reacts with carbonate in the presence of oxygen to produce a mixture of mono- and di-uranates. The monouranate is favoured at high temperature. In the presence of alkali-metal nitrate salts the reaction rate is increased markedly: 100\% oxidation of UO, is possible at 723 K in 1 h. Oxygen stirring of the melt also increases the rate of oxidation over air stirring and simple stirring. The mechanism of oxidation of UO2 is dependent upon generation of peroxide and superoxide ions in the carbonate melt.

Author keywords:

SOLUBILITIES; OXYGEN; MELTS

DOI:

10.1039/ft9969205059

Web of Science ID:

ISI:A1996WE21000030

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	DEC 21
Publisher	ROYAL SOC CHEMISTRY
Address	THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF
Language	English
Keywords-Plus	SOLUBILITIES; OXYGEN; MELTS
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Atomic, Molecular \& Chemical
ResearcherID-Numbers	Volkovich, Vladimir/K-8339-2012
ORCID-Numbers	Volkovich, Vladimir/0000-0003-4438-1194
Number-of-Cited-References	38
Usage-Count-Since-2013	7
Journal-ISO	J. Chem. Soc.-Faraday Trans.
Doc-Delivery-Number	WE210