Precipitation of rare earth compounds in LiCl-KCl eutectic

Yasushi Katayama, Rika Hagiwara, Yasuhiko Ito

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The 3:1 compounds of KCl and RECl3, K3RECl6 (RE = Gd, Y, and Yb) precipitate from the LiCl-KCl eutectic melt containing trivalent rare earth species, RE(III), at 723 K. In the presence of O2-, RE2O3 and/or REOCl precipitate from the melt. In the case of Gd, the formation of Gd2O3 and GdOCl strongly depends on O2- ion concentration in the melt. Only Y2O3 precipitates selectively from the melt while REOCl precipitates selectively when RE = La and Nd. The relative stability of REOCl against RE2O3, thermodynamically evaluated for the same melt condition, shows REOCl is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.

Original languageEnglish
Pages (from-to)2174-2178
Number of pages5
JournalJournal of the Electrochemical Society
Volume142
Issue number7
Publication statusPublished - 1995 Jul
Externally publishedYes

Fingerprint

Rare earth compounds
rare earth compounds
eutectics
Eutectics
Precipitates
precipitates
Earth (planet)
ion concentration
Rare earths
rare earth elements
Ions

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Precipitation of rare earth compounds in LiCl-KCl eutectic. / Katayama, Yasushi; Hagiwara, Rika; Ito, Yasuhiko.

In: Journal of the Electrochemical Society, Vol. 142, No. 7, 07.1995, p. 2174-2178.

Research output: Contribution to journalArticle

Katayama, Yasushi ; Hagiwara, Rika ; Ito, Yasuhiko. / Precipitation of rare earth compounds in LiCl-KCl eutectic. In: Journal of the Electrochemical Society. 1995 ; Vol. 142, No. 7. pp. 2174-2178.
@article{82188196f0ec4cd18087c54a3fcf193c,
title = "Precipitation of rare earth compounds in LiCl-KCl eutectic",
abstract = "The 3:1 compounds of KCl and RECl3, K3RECl6 (RE = Gd, Y, and Yb) precipitate from the LiCl-KCl eutectic melt containing trivalent rare earth species, RE(III), at 723 K. In the presence of O2-, RE2O3 and/or REOCl precipitate from the melt. In the case of Gd, the formation of Gd2O3 and GdOCl strongly depends on O2- ion concentration in the melt. Only Y2O3 precipitates selectively from the melt while REOCl precipitates selectively when RE = La and Nd. The relative stability of REOCl against RE2O3, thermodynamically evaluated for the same melt condition, shows REOCl is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.",
author = "Yasushi Katayama and Rika Hagiwara and Yasuhiko Ito",
year = "1995",
month = "7",
language = "English",
volume = "142",
pages = "2174--2178",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "7",

}

TY - JOUR

T1 - Precipitation of rare earth compounds in LiCl-KCl eutectic

AU - Katayama, Yasushi

AU - Hagiwara, Rika

AU - Ito, Yasuhiko

PY - 1995/7

Y1 - 1995/7

N2 - The 3:1 compounds of KCl and RECl3, K3RECl6 (RE = Gd, Y, and Yb) precipitate from the LiCl-KCl eutectic melt containing trivalent rare earth species, RE(III), at 723 K. In the presence of O2-, RE2O3 and/or REOCl precipitate from the melt. In the case of Gd, the formation of Gd2O3 and GdOCl strongly depends on O2- ion concentration in the melt. Only Y2O3 precipitates selectively from the melt while REOCl precipitates selectively when RE = La and Nd. The relative stability of REOCl against RE2O3, thermodynamically evaluated for the same melt condition, shows REOCl is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.

AB - The 3:1 compounds of KCl and RECl3, K3RECl6 (RE = Gd, Y, and Yb) precipitate from the LiCl-KCl eutectic melt containing trivalent rare earth species, RE(III), at 723 K. In the presence of O2-, RE2O3 and/or REOCl precipitate from the melt. In the case of Gd, the formation of Gd2O3 and GdOCl strongly depends on O2- ion concentration in the melt. Only Y2O3 precipitates selectively from the melt while REOCl precipitates selectively when RE = La and Nd. The relative stability of REOCl against RE2O3, thermodynamically evaluated for the same melt condition, shows REOCl is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.

UR - http://www.scopus.com/inward/record.url?scp=0029344852&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029344852&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029344852

VL - 142

SP - 2174

EP - 2178

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 7

ER -