Synthesis of plutonium trifluoride by hydro-fluorination and novel thermodynamic data for the PuF^sub 3^-LiF system

PuF3 was synthetized by hydro-fluorination of PuO2 and subsequent reduction of the product by hydrogenation. The obtained PuF3 was analysed by X-Ray Diffraction (XRD) and found phase-pure. High purity was also confirmed by the melting point analysis using Differential Scanning Calorimetry (DSC). PuF...

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Bibliographic Details
Published in:Journal of nuclear materials 2018-05, Vol.503, p.171
Main Authors: Tosolin, A, Soucek, P, Beneš, O, Vigier, J-F, Luzzi, L, Konings, RJM
Format: Article
Language:English
Subjects:
Calorimetry
Chemical synthesis
Differential scanning calorimetry
Diffraction
Enthalpy
Eutectic composition
Fluorination
Lithium fluoride
Melting
Melting point
Melting points
Phase equilibria
Plutonium
Plutonium fluorides
Solidification
Thermodynamics
X-ray diffraction
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Summary:PuF3 was synthetized by hydro-fluorination of PuO2 and subsequent reduction of the product by hydrogenation. The obtained PuF3 was analysed by X-Ray Diffraction (XRD) and found phase-pure. High purity was also confirmed by the melting point analysis using Differential Scanning Calorimetry (DSC). PuF3 was then used for thermodynamic assessment of the PuF3-LiF system. Phase equilibrium points and enthalpy of fusion of the eutectic composition were measured by DSC. XRD analyses of selected samples after DSC measurement confirm that after solidification from the liquid, the system returns to a mixture of LiF and PuF3.
ISSN:0022-3115
1873-4820