Chemical Form of Actinide Elements Contained in Anode Residue Generated in Electrolysis and the Conversion to Chlorides Using ZrCl<sub>4</sub>

Kitawaki, Shinichi; Nakayoshi, Akira; Fukushima, Mineo; Yahagi, Noboru; Kurata, Masaki

doi:10.13182/nt10-a10863

Nuclear Technology

2010

DOI: 10.13182/nt10-a10863

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Chemical Form of Actinide Elements Contained in Anode Residue Generated in Electrolysis and the Conversion to Chlorides Using ZrCl₄

Shinichi Kitawaki

Akira Nakayoshi

Mineo Fukushima

et al.

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Cited by 4 publications

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“…18 The Li 2 ZrO 3 is a key issue in electrorefining process because it can react with UCl 3 dissolved in LiCl-KCl melts. 19,20 Although there are many advantages to the electrochemical reduction process, the electrochemical reduction of ZrO 2 remains difficult because its high affinity to oxygen and extremely high thermodynamic stability. 5,7 = These authors contributed equally to this work.…”

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Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Ping

Liu

Yuan

et al. 2017

J. Electrochem. Soc.

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The Ni 5 Zr alloy prepared from the mixture of nickel oxide (NiO) and zirconium oxide (ZrO 2 ) powders by direct electrochemical reduction was conducted in molten lithium chloride (LiCl) at 923 K. The electrochemical reduction behaviors of ZrO 2 and NiO-ZrO 2 mixture were firstly investigated by cyclic voltammetry measurements. The influence of process parameters such as oxide composition, compression force, sintering time, and cell voltage on the electrolysis process have been comprehensively evaluated in terms of the electrochemical reducibility of ZrO 2 . The results demonstrated that the reduction starts with the reduction of NiO to Ni metal, and is followed by the reduction of ZrO 2 on the pre-formed Ni particles to generate the intermetallic Ni 5 Zr. The pure Ni 5 Zr alloy can be prepared by direct electrochemical reduction of mixed 5NiO-ZrO 2 pellets when the cell voltage of 3.2 V is applied. The reduction rate increases with higher content of NiO in a NiO-ZrO 2 mixture pellet. However, the quality of formed Ni 5 Zr intermetallic compound particle seems unaffected under different preparation conditions.

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confidence: 99%

Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Ping

Liu

Yuan

et al. 2017

J. Electrochem. Soc.

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Formation and reduction behaviors of zirconium oxide compounds in LiCl–Li2O melt at 923 K

Sakamura

Iizuka

Kitawaki

et al. 2015

Journal of Nuclear Materials

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Electrolytic Reduction and Electrorefining of Uranium to Develop Pyrochemical Reprocessing of Oxide Fuels

Sakamura

Omori

2010

Nuclear Technology

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Chemical Form of Actinide Elements Contained in Anode Residue Generated in Electrolysis and the Conversion to Chlorides Using ZrCl₄

Cited by 4 publications

References 3 publications

Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Formation and reduction behaviors of zirconium oxide compounds in LiCl–Li2O melt at 923 K

Electrolytic Reduction and Electrorefining of Uranium to Develop Pyrochemical Reprocessing of Oxide Fuels

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Chemical Form of Actinide Elements Contained in Anode Residue Generated in Electrolysis and the Conversion to Chlorides Using ZrCl4

Cited by 4 publications

References 3 publications

Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Direct Electrochemical Preparation of Ni-Zr Alloy from Mixture Oxides in LiCl Molten Salt

Formation and reduction behaviors of zirconium oxide compounds in LiCl–Li2O melt at 923 K

Electrolytic Reduction and Electrorefining of Uranium to Develop Pyrochemical Reprocessing of Oxide Fuels

Contact Info

Product

Resources

About

Chemical Form of Actinide Elements Contained in Anode Residue Generated in Electrolysis and the Conversion to Chlorides Using ZrCl₄