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Calciothermic reduction of NiO by molten salt electrolysis of CaO in CaCl2 melt

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Title: Calciothermic reduction of NiO by molten salt electrolysis of CaO in CaCl2 melt
Authors: Descallar-Arriesgado, Reyna Famila Browse this author
Kobayashi, Naoto Browse this author
Kikuchi, Tatsuya Browse this author
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: Nickel oxide
Calcium oxide
Calcium chloride
Calciothermic reduction
Molten salt electrolysis
Issue Date: 1-Oct-2011
Publisher: Elsevier
Journal Title: Electrochimica Acta
Volume: 56
Issue: 24
Start Page: 8422
End Page: 8429
Publisher DOI: 10.1016/j.electacta.2011.07.027
Abstract: Metallic nickel powders with low and uniform residual oxygen content were produced from NiO using the molten salt electrolysis of CaO in CaCl2 melt. Suitable amount of CaO for the reduction was in the range of 0.5-3.0 mol% CaO. The electrical isolation of NiO from both electrodes could produce metallic Ni in CaCl2 melt. Separating the metal oxides from the cathode confirmed the mechanism of calciothermic reduction that the electrolysis of dissolved CaO in CaCl2 melt produces Ca, and that the dissolved Ca in molten CaCl2 successfully reduces NiO to metallic Ni. An average of about 600 ppm oxygen in Ni sample was achieved directly from oxide, when NiO was detached from the cathode.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鈴木 亮輔

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