AlCl3-aided extraction of praseodymium from Pr6O 11 in LiCl-KCl eutectic melts

Hao Tang, Yong De Yan, Mi Lin Zhang, Xing Li, Ying Huang, Yan Lu Xu, Yun Xue, Wei Han, Zhi Jian Zhang

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Gibbs energy showed that AlCl3 can chloridize Pr 6O11 and release Pr(III) ions in the LiCl-KCl-Pr 6O11-AlCl3 melts. The co-reduction process of Al(III), Pr(III) and Li(I) ions was investigated in the LiCl-KCl-Pr 6O11-AlCl3 melts. Three signals, corresponding to different Al-Pr intermetallic compounds, were observed by cyclic voltammetry, square wave voltammetry and open circuit chronopotentiometry. Potentiostatic and galvanostatic electrolysis were conducted to extract Pr element from LiCl-KCl eutectic melts by forming Al-Pr and Al-Li-Pr alloys, respectively. X-ray diffraction (XRD) indicated that both Al-Pr and Al-Li-Pr alloys comprised Al2Pr phase. The composition of Al-Li-Pr alloys was analyzed by inductive coupled plasma atomic emission spectrometer (ICP-AES). The proportion of Pr element in Al-Li-Pr alloys exceeded 40 wt.% when the concentration of AlCl3 reached 8 wt.% in the LiCl-KCl-Pr6O11(1 wt.%) melts.

Original languageEnglish
Pages (from-to)457-462
Number of pages6
JournalElectrochimica Acta
Volume88
DOIs
StatePublished - 15 Jan 2013
Externally publishedYes

Keywords

  • Al-Li-Pr alloys
  • Electrodeposition
  • Extraction of Pr
  • Molten chlorides

Fingerprint

Dive into the research topics of 'AlCl3-aided extraction of praseodymium from Pr6O 11 in LiCl-KCl eutectic melts'. Together they form a unique fingerprint.

Cite this