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Volume oxidation of uranium mononitride and uranium monocarbide in the dry NOX-gaseous atmosphere

  • Sergey A. Kulyukhin , Yuri M. Nevolin EMAIL logo , Vladimir G. Petrov and Stepan N. Kalmykov
From the journal Radiochimica Acta

Abstract

Gaseous volume oxidation (voloxidation) of uranium mononitride (UN) and uranium monocarbide (UC) was investigated in the “NOx-air” atmosphere in the temperature range 298–673 K. It was shown that UN can be converted into uranium water-soluble compounds using an alternative oxidation atmosphere based on NOX-gases. UO3 and uranyl nitrates are the main products of the reaction. Maximum degree of the UN conversion to water-soluble compounds equal to 80 % was observed at the temperature 565 K. Products of the UC conversion are uranium oxides and oxihydroxides. The observed degree of the UC conversion into water-soluble compounds was less then 20 %.

Acknowledgments

This work is partially sponsored by the Ministry of Education and Science of the Russian Federation under grant number № AAAA-A16-116110910010-3.

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Received: 2019-02-19
Accepted: 2019-12-13
Published Online: 2020-01-17
Published in Print: 2020-07-28

©2020 Walter de Gruyter GmbH, Berlin/Boston

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