Reaction of ozone with uranium(IV) oxalate in water
- Authors: Gogolev A.V.1, Shilov V.P.1, Perminov V.P.1, Fedoseev A.M.1
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Issue: Vol 59, No 3 (2017)
- Pages: 233-239
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/223894
- DOI: https://doi.org/10.1134/S1066362217030043
- ID: 223894
Cite item
Abstract
Decomposition of aqueous suspensions of uranium(IV) oxalate under the action of an ozone–oxygen mixture was studied. The process occurs in two steps. In the first step, the U(IV) oxidation with the formation of oxalic acid uranyl solutions prevails. The second step involves decomposition of oxalate ions and hydrolysis of uranyl ions. An increase in temperature accelerates the transformation of uranium(IV) oxalate into uranium(VI) hydroxide compounds. In solutions containing KBr or UO2Br2, the following reaction occurs: O3 + Br– → O2 + BrO–. The arising hypobromite ions and hypobromous acid oxidize uranium(IV) oxalate extremely efficiently. The possible mechanism of ozonation of aqueous uranium(IV) oxalate suspensions is discussed.
Keywords
About the authors
A. V. Gogolev
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
V. P. Shilov
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
V. P. Perminov
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
A. M. Fedoseev
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071