Kinetics of Reduction of Uranium (VI) to Uranium (IV) at Titanium Electrode in Nitric Acid and Hydrazine Media.
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概要
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The kinetic study of the reduction of U(VI) at the titanium electrode in nitric acid and hydrazine media was carried out at 25 0.5°C. Uranium (VI) is reduced through a totally irreversible process and kinetic parameters are affected by both the concentration of nitric acid and the electrolytic potential. An empirical equation to express the rate of the reduction of U(VI) was proposed and was confirmed to be in fairly good agreement with the amount of U(IV) produced by the controlled-potential electrolysis. The optimal condition for the prepara-tion of U(IV) from U(VI) was found to be the electrolysis at -0.5V vs. Ag-AgCl/sat.KCI in 12 M HNO<SUB>3</SUB> and 0.10.2 M hydrazine.
- 一般社団法人 日本原子力学会の論文
著者
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KIM Jong-Duk
Department of Chem. Eng., Korean Advanced Institute of Science and Technology
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Yoshida Zenko
Advanced Science Research Center Japan Atomic Energy Research Institute
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Aoyagi Hisao
Advanced Science Research Center Japan Atomic Energy Research Institute
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KIM Jong-Duk
Department of Chemical Engineering, Korea Advanced Institute of Science and Technology
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KIM Kwang-Wook
Department of Project Management, Korea Atomic Energy Research Institute
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