Reaction of ozone with Np(IV) and Pu(IV) oxalates in water
- Authors: Fedoseev A.M.1, Gogolev A.V.1, Shilov V.P.1, Charushnikova I.A.1, Makarenkov V.I.1, Perminov V.P.1
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Issue: Vol 59, No 6 (2017)
- Pages: 570-578
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224244
- DOI: https://doi.org/10.1134/S1066362217060042
- ID: 224244
Cite item
Abstract
The reaction of the ozone–oxygen mixture with aqueous suspensions of Np(IV) and Pu(IV) oxalates was studied. Both metal cations and oxalate anions are oxidized in the process. The final products are Np(VI) and Pu(VI) hydroxides. The composition of Np(VI) hydroxide was confirmed by X-ray diffraction analysis. Oxidation of Np(IV) oxalate with oxygen leads to the accumulation of Np(V) oxalate and oxalic acid in the solution. At incomplete oxidation of Np(IV) oxalate with ozone in water, Np(V) is also accumulated. Heating considerably accelerates the ozonation. The possible reaction mechanism is briefly discussed. The Np(V) and Np(VI) ions participate in the catalytic cycle of the decomposition of oxalate ions with ozone.
About the authors
A. M. Fedoseev
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
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
I. A. Charushnikova
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: Gogolev@ipc.rssi.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071
V. I. Makarenkov
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