Precipitation of Rare Earth Compounds in LiCI-KCI Eutectic

Yasushi Katayama; Yasuhiko Ito

doi:10.1149/1.2044271

Precipitation of Rare Earth Compounds in LiCI-KCI Eutectic

Yasushi Katayama, Yasuhiko Ito

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

The 3:1 compounds of KC1 and RECI, K₃REC1₆ (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 O^2-RE₂O₃ and/or REOC1 precipitate from the melt. In the case of Gd, the formation of Gd₂O₃ and GdOCl strongly depends on O^2- ion concentration in the melt. Only Y₂O₃ precipitates selectively from the melt while REOC1 precipitates selectively when RE = La and Nd. The relative stability of REOC1 against RE₂03 thermodynamically evaluated for the same melt condition, shows REOC1 is preferentially formed for light earths while the formation of RE₂O₃ is dominant for heavy earths.

Original language	English
Pages (from-to)	2174-2178
Number of pages	5
Journal	Journal of the Electrochemical Society
Volume	142
Issue number	7
DOIs	https://doi.org/10.1149/1.2044271
Publication status	Published - 1995
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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title = "Precipitation of Rare Earth Compounds in LiCI-KCI Eutectic",

abstract = "The 3:1 compounds of KC1 and RECI, K3REC16 (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 REOC1 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 REOC1 precipitates selectively when RE = La and Nd. The relative stability of REOC1 against RE203 thermodynamically evaluated for the same melt condition, shows REOC1 is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.",

author = "Yasushi Katayama and Yasuhiko Ito",

year = "1995",

doi = "10.1149/1.2044271",

language = "English",

volume = "142",

pages = "2174--2178",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "Electrochemical Society, Inc.",

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T1 - Precipitation of Rare Earth Compounds in LiCI-KCI Eutectic

AU - Katayama, Yasushi

AU - Ito, Yasuhiko

PY - 1995

Y1 - 1995

N2 - The 3:1 compounds of KC1 and RECI, K3REC16 (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 REOC1 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 REOC1 precipitates selectively when RE = La and Nd. The relative stability of REOC1 against RE203 thermodynamically evaluated for the same melt condition, shows REOC1 is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.

AB - The 3:1 compounds of KC1 and RECI, K3REC16 (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 REOC1 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 REOC1 precipitates selectively when RE = La and Nd. The relative stability of REOC1 against RE203 thermodynamically evaluated for the same melt condition, shows REOC1 is preferentially formed for light earths while the formation of RE2O3 is dominant for heavy earths.

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Precipitation of Rare Earth Compounds in LiCI-KCI Eutectic

Abstract

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