Abstract
At a weight fraction below 20%, Pu(IV) nitrate is isomorphically dissolved and homogeneously distributed in the uranyl nitrate hexahydrate phase, the solubility being independent of the HNO3 concentration in the mixed U-Pu melt up to the acid concentration of 7 M. In dissolving solid Pu(IV) nitrate in 1–6 M HNO3, Pu(IV) disproportionates to form Pu(III) and Pu(VI). With increasing HNO3 concentration to above 10 M, Pu(IV) passes into solution as Pu(NO3) 2−6 , and no disproportionation is observed.
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Original Russian Text © Yu.M. Kulyako, T.I. Trofimov, M.D. Samsonov, A.Yu. Shadrin, B.F. Myasoedov, 2008, published in Radiokhimiya, 2008, Vol. 50, No. 3, pp. 215–217.
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Kulyako, Y.M., Trofimov, T.I., Samsonov, M.D. et al. Solubility of plutonium nitrate in uranyl nitrate hexahydrate melt. Radiochemistry 50, 250–252 (2008). https://doi.org/10.1134/S1066362208030053
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DOI: https://doi.org/10.1134/S1066362208030053