Pretreatment of a Titanium Electrode for Reduction of Uranium(VI) in Nitric Acid-Hydrazine Media.
スポンサーリンク
概要
- 論文の詳細を見る
The oxide film at the surface of a titanium electrode, which was observed by an Electron Probe Microanalyzer (EPMA) measurement, was found to hinder an electrolytic reduction of U(VI) to U(IV) in a nitric acid solution containing hydrazine. A method for the pretreatment of the titanium electrode to obtain a clear voltammogram for the reduction of U(VI) was investigated, and it was found that a controlled-potential electrolysis with a potential less than -0.8 V vs. SSE for about 30 min was adequate to remove the oxide film. The effect of the composition of the HNO<SUB>3</SUB>+N<SUB>2</SUB>H<SUB>5</SUB><SUP>+</SUP> solution on the degree of pretreatment was examined. Voltammograms for the reduction of U(VI) at the oxide-free titanium electrode were recorded and analyzed.
- 一般社団法人 日本原子力学会の論文
著者
-
Yoshida Zenko
Advanced Science Research Center Japan Atomic Energy Research Institute
-
Aoyagi Hisao
Advanced Science Research Center Japan Atomic Energy Research Institute
-
KIM Jong-Duk
Research Facility Design Laboratory, Department of Project Management, Korea Atomic Energy Research Institute
-
KIM Kwang-Wook
Research Facility Design Laboratory, Department of Project Management, Korea Atomic Energy Research Institute
-
TOIDA Yukio
Advanced Science Research Center, Japan Atomic Energy Research Institute
関連論文
- Complex Formation of Lanthanide Ions with Sulfonated Crown Ethers in Aqueous Solution
- Dissolution Behavior of Uranium Oxides with Supercritical CO_2 Using HNO_3-TBP Complex as a Reactant
- New Method for the Removal of Uranium from Solid Wastes with Supercritical CO_2 Medium Containing HNO_3-TBP Complex
- Voltammetric Study on Ion Transfer of Uranium(VI)Ion Between Aqueous and Nitrobenzene Phases in the Presence of Bis(diphenylphosphoryl)methane
- Characterization of Eu(III) Adsorbed onto Chitin and Chitosan by Time-resolved Laser-induced Fluorescence Spectroscopy
- Modeling of the Extraction of Uranium with Supercritical Carbon Dioxide
- A Novel Laser-Induced Photothermal Displacement Spectroscopy (LIPDS) for Detection and Speciation of a Metal Ion in Aqueous Solution
- Speciation of Neptunium(VI) Solid Phases Formed in Aqueous Carbonate Systems
- Extraction of Uranium(VI) from Nitric Acid Solution into Supercritical Carbon Dioxide Containing Tri-n-butylphosphate
- Voltammetric Study on Transfer of UO_2^ Across the Interface Between Aqueous and Nitrobenzene Solutions in the Presence of Octyl(phenyl)-N, N-diisobutylcarbamoyl-methylphosphine Oxide (CMPO)
- Pretreatment of a Titanium Electrode for Reduction of Uranium(VI) in Nitric Acid-Hydrazine Media.
- Kinetics of Reduction of Uranium (VI) to Uranium (IV) at Titanium Electrode in Nitric Acid and Hydrazine Media.