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Synthesis of plutonium trichloride and measurement of redox potentials for the Pu3+/Pu0 couple in NaCl–2CsCl melt.

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Bibliographic Details
Title: Synthesis of plutonium trichloride and measurement of redox potentials for the Pu3+/Pu0 couple in NaCl–2CsCl melt.
Authors: Hayashi, Hirokazu1,2 (AUTHOR) hayashi.hirokazu55@jaea.go.jp, Minato, Kazuo1,3 (AUTHOR)
Source: Journal of Radioanalytical & Nuclear Chemistry. Jun2026, Vol. 335 Issue 6, p4233-4240. 8p.
Subject Terms: *Reduction potential, *Chemical synthesis, *Gibbs' free energy, *Solid state chemistry, *Electrochemical analysis, *Activity coefficients, *Fused salts
Abstract: Plutonium trichloride (PuCl3) was synthesized by a solid-state reaction of plutonium nitride with cadmium chloride. Electrochemical studies of PuCl3–(NaCl–2CsCl) melt at 823–923 K revealed that Pu3+ ions are reduced to Pu metal by a single-step mechanism and that the apparent standard potentials of the Pu3+/Pu0 redox couple are given by E*(Pu3+/Pu0) = − 3.514 + 8.60 × 10−4 T vs. Cl2/Cl− (V). The activity coefficients of Pu3+ ions were determined using the previously reported Gibbs free energy of formation for PuCl3 in the supercooled liquid state. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Description
Abstract:Plutonium trichloride (PuCl3) was synthesized by a solid-state reaction of plutonium nitride with cadmium chloride. Electrochemical studies of PuCl3–(NaCl–2CsCl) melt at 823–923 K revealed that Pu3+ ions are reduced to Pu metal by a single-step mechanism and that the apparent standard potentials of the Pu3+/Pu0 redox couple are given by E*(Pu3+/Pu0) = − 3.514 + 8.60 × 10−4 T vs. Cl2/Cl− (V). The activity coefficients of Pu3+ ions were determined using the previously reported Gibbs free energy of formation for PuCl3 in the supercooled liquid state. [ABSTRACT FROM AUTHOR]
ISSN:02365731
DOI:10.1007/s10967-026-10920-1