Vol. XXII, No. 1, Pp. 1-72
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Pages: 3 - 10
Authors: Vladimir N. PRUSAKOV, Yury A. TETERIN, Nikolai M. TROTSENKO, Konstantin I. MASLAKOV, Anton Yu. TETERIN, Kirill E. IVANOV, Filipp S. BOCHAGIN, Dmitry V. UTROBIN
Nuclear fuel reprocessing by fluorination, a dry method of regeneration of spent nuclear fuel, uses UO2F2 for the separation of plutonium from gaseous mixtures. Since plutonium requires special treatment, IrF6 was used as a thermodynamic model of PuF6. The model reaction of the interaction of gaseous IrF6 with fine UO2F2 in the sorption column revealed a change of color of the sorption column contents from pale-yellow to grey and black, indicating the formation of products of such an interaction. The X-ray photoelectron spectroscopy study showed that the interaction of gaseous IrF6 with fine UO2F2 at 125 °C results in the formation of stable iridium compounds where the iridium oxidation state is close to Ir3+. The dependence of the elemental compositions of the layers in the sorption column on the penetration depth of IrF6 was established.
X-ray photoelectron spectroscopy, uranyl fluorite, iridium hexafluoride, technology of isolation of actinides from gas mixtures
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