Étude des réactions d'oxydo—réduction du neptunium dans le mélange Rbcl—CsCl (25–75% mol) |
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| Authors: | R. Lysy G. Duyckaerts |
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| Affiliation: | Laboratoire de Chimie analytique et Radiochimie, Université de Liège au Sart-Tilman, B-4000, LiègeBelgique |
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| Abstract: | The oxidation—reduction reactions o f neptunium in molten RbCl—CsCl.Standard potentials of the systems NpO2(VI)—NpO2(V) and Np(IV)—Np(III) and the equilibrium constant of the following disproportionation reaction 2NP4+ + 2H2O + 2Cl- ? NpO+2 + Np3++ 4HCI have been determined in a (Rb 0,25; Cs 0,75 )C1 melt in the temperature range 660—750°C by absorption spectrophotometry. The results are com- pared with those obtained previously in (Li 0,7; K 0,3)C1, (Li, K)C1 eutectic and (Li 0,55; CsO,45)Cl. |
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