TY - JOUR
T1 - Selective Electrodeposition of Europium and Samarium in Molten LiCl-KCl with Copper and Aluminum Electrodes
AU - Ge, Jianbang
AU - Yang, Qiufeng
AU - Wang, Yafei
AU - Zhuo, Weiqian
AU - Du, Miting
AU - Zhang, Jinsuo
N1 - Publisher Copyright:
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PY - 2020/1/7
Y1 - 2020/1/7
N2 - Separation of the adjacent lanthanide (Ln) pair such as Sm-Eu from each other using chemical methods is difficult due to their similar chemical features. In the present work, electrochemical separation of Eu and Sm from each other were studied in molten LiCl-KCl-1 wt% EuCl3-1 wt% SmCl3 at 500 °C. By using a Cu reactive electrode, Sm was selectively separated from the salt because of the formation of several Cu-Sm intermetallic compounds while Eu remained in the salt. The formation of Al-Eu compounds occurs at a more negative potential than that of the Al-Sm compounds on Al electrode. However, the formation rate of Al-Eu compound is much higher than that of Al-Sm compound. With an electrolysis time of 0.5 h and a potential at -2.225 V (vs Ag(I)/Ag), the deposit on the electrode is mainly made up of Al-Eu compound. This study reveals the influence of working electrode on Eu-Sm separation and provides a potential method for adjacent lanthanide pair separation.
AB - Separation of the adjacent lanthanide (Ln) pair such as Sm-Eu from each other using chemical methods is difficult due to their similar chemical features. In the present work, electrochemical separation of Eu and Sm from each other were studied in molten LiCl-KCl-1 wt% EuCl3-1 wt% SmCl3 at 500 °C. By using a Cu reactive electrode, Sm was selectively separated from the salt because of the formation of several Cu-Sm intermetallic compounds while Eu remained in the salt. The formation of Al-Eu compounds occurs at a more negative potential than that of the Al-Sm compounds on Al electrode. However, the formation rate of Al-Eu compound is much higher than that of Al-Sm compound. With an electrolysis time of 0.5 h and a potential at -2.225 V (vs Ag(I)/Ag), the deposit on the electrode is mainly made up of Al-Eu compound. This study reveals the influence of working electrode on Eu-Sm separation and provides a potential method for adjacent lanthanide pair separation.
UR - http://www.scopus.com/inward/record.url?scp=85082166426&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/ab628a
DO - 10.1149/1945-7111/ab628a
M3 - Article
AN - SCOPUS:85082166426
SN - 0013-4651
VL - 167
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
M1 - 022501
ER -