Electronic absorption spectral study of the oxidation of uranium dioxide in chloride melts / Volkovich V.A., Griffiths T.R., Fray D.J., Thied R.C. // Physical Chemistry Chemical Physics. - 2000. - V. 2, l. 17. - P. 3871-3876.

ISSN:

14639076

Type:

Article

Abstract:

The reaction of uranium dioxide with melts of alkali metal chlorides (LiCl, LiCl-KCl and NaCl-CsCl) under oxidising conditions was followed spectroscopically between 550 and 700°C. The reaction proceeds via initial intermediate uranyl chloro species and finally results in the formation of sparingly soluble alkali metal uranates(VI). The addition of aluminium chloride to the melt changes the mechanism of the oxidation so that a soluble uranyl chloride complex is the final product. The electronic absorption spectra of solutions of alkali metal uranates in chloride melts have been recorded for the first time. Solutions of monouranates are stable with time, but diuranates tend to react with alkali chloride melts to form monouranate species.

Author keywords:

Index keywords:

aluminum chloride; chloride; uranium dioxide; article; chemical reaction kinetics; complex formation; dissolution; electronics; metal binding; oxidation; reaction analysis; spectroscopy

DOI:

нет данных

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033866295&partnerID=40&md5=35131b59c5ee99548f45c6b3359acacf
Affiliations	Radiochemistry Centre, Chemistry Department, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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Correspondence Address	Volkovich, V.A.; Radiochemistry Centre, Chemistry Department, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
CODEN	PPCPF
Language of Original Document	English
Abbreviated Source Title	Phys. Chem. Chem. Phys.
Source	Scopus