High-temperature interaction of components of spent uranium nuclear fuel with alkali metal carbonates in the course of voloxidation in the Carbex process
- Autores: Chekmarev A.M.1,2, Vazhenkov M.V.1, Stepanov S.I.1,2, Boyarintsev A.V.1, Tsivadze A.Y.2
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Afiliações:
- Mendeleev University of Chemical Technology of Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Edição: Volume 59, Nº 4 (2017)
- Páginas: 341-344
- Seção: Article
- URL: https://ogarev-online.ru/1066-3622/article/view/224021
- DOI: https://doi.org/10.1134/S1066362217040038
- ID: 224021
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Resumo
Interaction of UO2, U3O8, ZrO2, Nb2O5, CeO2, Ce2O3, Pr6O11, Eu2O3, Yb2O3, Tb7O12, and Re metal with lithium, sodium, and potassium carbonates in the temperature interval 300–900°С was studied using methods of thermal analysis and X-ray diffraction. The major products of the high-temperature reactions are alkali metal uranates and diuranates, and in the case of ZrO2, Nb2O5, and lanthanide oxides, oxides of metals in higher oxidation states and salts of the corresponding metal-containing acids, formed by reactions of the oxides with sodium carbonate.
Sobre autores
A. Chekmarev
Mendeleev University of Chemical Technology of Russia; Frumkin Institute of Physical Chemistry and Electrochemistry
Email: chao_step@mail.ru
Rússia, Miusskaya pl. 9, Moscow, 125047; Leninskii pr. 31, korp. 4, Moscow, 119071
M. Vazhenkov
Mendeleev University of Chemical Technology of Russia
Email: chao_step@mail.ru
Rússia, Miusskaya pl. 9, Moscow, 125047
S. Stepanov
Mendeleev University of Chemical Technology of Russia; Frumkin Institute of Physical Chemistry and Electrochemistry
Autor responsável pela correspondência
Email: chao_step@mail.ru
Rússia, Miusskaya pl. 9, Moscow, 125047; Leninskii pr. 31, korp. 4, Moscow, 119071
A. Boyarintsev
Mendeleev University of Chemical Technology of Russia
Email: chao_step@mail.ru
Rússia, Miusskaya pl. 9, Moscow, 125047
A. Tsivadze
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: chao_step@mail.ru
Rússia, Leninskii pr. 31, korp. 4, Moscow, 119071
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