Stabilization of lanthanum sulfides with different dopants

Peisen Li; Huanyong Li; Wanqi Jie

doi:10.1007/s11595-012-0498-z

Stabilization of lanthanum sulfides with different dopants

Peisen Li, Huanyong Li, Wanqi Jie

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

5 Scopus citations

Abstract

By introducing different dopants into the lattice, lanthanum sulfides with higher stability were prepared via the sulfurization of lanthanum oxides using CS ₂ gas at 1 000 °C. The sulfurizing time of 8 hours was optimized for La/Ca=2 at 1 000 °C and its sulfurization mechanism to form CaLa ₂S ₄ was via the reaction of β-La ₂S ₃ with CaS. As the increase of the La/Ca and La/Na ratio, longer sulfurizing time was required to get cubic phase. The investigation indicates that Na ⁺ ions were more effective to stabilize cubic structure comparing with Ca ²⁺ ions.

Original language	English
Pages (from-to)	529-533
Number of pages	5
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	27
Issue number	3
DOIs	https://doi.org/10.1007/s11595-012-0498-z
State	Published - Jun 2012

Keywords

carbon impurity
lanthanum sulfide
stability
sulfurization

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title = "Stabilization of lanthanum sulfides with different dopants",

abstract = "By introducing different dopants into the lattice, lanthanum sulfides with higher stability were prepared via the sulfurization of lanthanum oxides using CS 2 gas at 1 000 °C. The sulfurizing time of 8 hours was optimized for La/Ca=2 at 1 000 °C and its sulfurization mechanism to form CaLa 2S 4 was via the reaction of β-La 2S 3 with CaS. As the increase of the La/Ca and La/Na ratio, longer sulfurizing time was required to get cubic phase. The investigation indicates that Na + ions were more effective to stabilize cubic structure comparing with Ca 2+ ions.",

keywords = "carbon impurity, lanthanum sulfide, stability, sulfurization",

author = "Peisen Li and Huanyong Li and Wanqi Jie",

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T1 - Stabilization of lanthanum sulfides with different dopants

AU - Li, Peisen

AU - Li, Huanyong

AU - Jie, Wanqi

PY - 2012/6

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N2 - By introducing different dopants into the lattice, lanthanum sulfides with higher stability were prepared via the sulfurization of lanthanum oxides using CS 2 gas at 1 000 °C. The sulfurizing time of 8 hours was optimized for La/Ca=2 at 1 000 °C and its sulfurization mechanism to form CaLa 2S 4 was via the reaction of β-La 2S 3 with CaS. As the increase of the La/Ca and La/Na ratio, longer sulfurizing time was required to get cubic phase. The investigation indicates that Na + ions were more effective to stabilize cubic structure comparing with Ca 2+ ions.

AB - By introducing different dopants into the lattice, lanthanum sulfides with higher stability were prepared via the sulfurization of lanthanum oxides using CS 2 gas at 1 000 °C. The sulfurizing time of 8 hours was optimized for La/Ca=2 at 1 000 °C and its sulfurization mechanism to form CaLa 2S 4 was via the reaction of β-La 2S 3 with CaS. As the increase of the La/Ca and La/Na ratio, longer sulfurizing time was required to get cubic phase. The investigation indicates that Na + ions were more effective to stabilize cubic structure comparing with Ca 2+ ions.

KW - carbon impurity

KW - lanthanum sulfide

KW - stability

KW - sulfurization

UR - http://www.scopus.com/inward/record.url?scp=84862193968&partnerID=8YFLogxK

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SN - 1000-2413

VL - 27

SP - 529

EP - 533

JO - Journal Wuhan University of Technology, Materials Science Edition

JF - Journal Wuhan University of Technology, Materials Science Edition

IS - 3

ER -

Stabilization of lanthanum sulfides with different dopants

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