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Investigation of the system ThO$_2$-NpO$_2$-P$_2$O$_5$.Solid solutions of thorium-neptunium (IV) phosphate-diphosphate

Abstract : Considering that phosphate matrices could be potential candidates for the immobilization of actinides or for the final disposal of the excess plutonium from dismantled nuclear weapons, the chemistry of thorium phosphates has been re-examined. In the ThO/sub 2/-P/sub 2/O/sub 5/ system, the thorium phosphate-diphosphate Th/sub 4/(PO/sub 4/)/sub 4/P/sub 2/O/sub 7/ (TPD) can be synthesized by wet and dry chemical processes. The substitution of thorium by other tetravalent actinides like uranium or plutonium can be obtained for 0
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http://hal.in2p3.fr/in2p3-00003983
Contributor : Suzanne Robert <>
Submitted on : Wednesday, February 16, 2000 - 3:16:20 PM
Last modification on : Wednesday, October 14, 2020 - 4:06:04 AM

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N. Dacheux, A.C. Thomas, V. Brandel, M. Genet. Investigation of the system ThO$_2$-NpO$_2$-P$_2$O$_5$.Solid solutions of thorium-neptunium (IV) phosphate-diphosphate. Journal of Nuclear Materials, Elsevier, 1998, 257, pp.108-117. ⟨in2p3-00003983⟩

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