Mechanism of electrolysis of rare earth chlorides in molten alkali chloride baths

Tsutomu Yamamura, Zong Yu Zheng, I. Cheng Wu, Hongmin Zhu, Mazhar Mehmood, Hideki Maekawa, Msayoshi Hoshi, Yuzuru Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The electrolytic reduction mechanism of rare-earth chlorides such as LaCl3, CeCl3, NdCl3, SmCl3 and DyCl3 in alkali chloride baths has been investigated in NaCl, KCl and eutectic LiCl-KCl by means of electrochemical transient methods. The thermodynamic behaviors of rare-earth containing species have been discussed in the frame of Electrode potential - p02- diagram. Low current efficiency found in the case of Nd electro-winning has been attributed to the dissolution of Nd into the bath. The analyses of electrochemical measurement required the elucidation of the effects of the factors such as under-potential deposition, metal dissolution, moisture and oxygen partial pressure.

Original languageEnglish
Title of host publicationYazawa International Symposium
Subtitle of host publicationMetallurgical and Materials Processing: Principles and Techologies; Aqueous and Electrochemical Processing
EditorsF. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn
Pages327-336
Number of pages10
Publication statusPublished - 2003 Oct 16
EventYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Aqueous and Electrochemical Processing - San Diego, CA, United States
Duration: 2003 Mar 22003 Mar 6

Publication series

NameYazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Aqueous and Electrochemical Processing
Volume3

Other

OtherYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Aqueous and Electrochemical Processing
CountryUnited States
CitySan Diego, CA
Period03/3/203/3/6

ASJC Scopus subject areas

  • Engineering(all)

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    Yamamura, T., Zheng, Z. Y., Wu, I. C., Zhu, H., Mehmood, M., Maekawa, H., Hoshi, M., & Sato, Y. (2003). Mechanism of electrolysis of rare earth chlorides in molten alkali chloride baths. In F. Kongoli, K. Itagaki, C. Yamauchi, H. Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, & H. Y. Sohn (Eds.), Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Aqueous and Electrochemical Processing (pp. 327-336). (Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Aqueous and Electrochemical Processing; Vol. 3).