Oxidation of powder and ceramic UO2 by KClO3 in molten (Li-Na-K)(2)CO3 eutectic / Volkovich VA,Griffiths TR,Fray DJ,Fields M,Thied RC // JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS. - 1998. - V. 94, l. 17. - P. 2623-2625.

ISSN/EISSN:

0956-5000 / нет данных

Type:

Article

Abstract:

The oxidation of UO2 powder and ceramic has been studied in the (Li-Na-K)(2)CO3 eutectic melt containing added potassium chlorate between 723 and 873 K. Complete oxidation of the powder could be achieved at 723 K and with KClO3: UO2 mob ratios between 0.25 and 0.3. Potassium monouranate was formed in the reaction and no chlorine was liberated. Although 723 K is some 50 K above the starting temperature for decomposition of KClO3 in air, tests showed that in the ternary carbonate eutectic less than 10\% had decomposed in the first 30 min. Comparison with the oxidation of UO2 by KNO3, the previous best known oxidant under similar conditions, showed that the efficiency of KClO3 as an oxidising agent for UO2 powder was greater at 723 K. KClO3 was also better than KNO3 for the oxidation of ceramic UO2 at 723 K, but the reaction was not complete at this temperature, even at KClO3:UO2 mole ratios up to 3.8. Attempts to achieve complete reaction by increasing the temperature were unsuccessful because the KClO3 now decomposed too rapidly.

Author keywords:

MIXTURES

DOI:

10.1039/a803303j

Web of Science ID:

ISI:000075752900019

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 7
Publisher	ROYAL SOC CHEMISTRY
Address	THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Language	English
Keywords-Plus	MIXTURES
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	16
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	3
Journal-ISO	J. Chem. Soc.-Faraday Trans.
Doc-Delivery-Number	116YP