Synthesis of γ-La₂S₃ via Treatment of La₂O₃ by Molten Sodium Thiocyanate with Potassium Cyanide Additions

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发表日期：

2024年7月1日

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A. A. Kapustin,
A. N. Romanov,
E. V. Haula,
V. N. Korchak

摘要

Abstract—

We report a new, convenient and simple low-temperature process for synthesis of γ-lanthanum(III) sulfide (γ-La₂S₃). In molten sodium thiocyanate with small KCN additions at a temperature of 350°C, lanthanum oxide converts into phase-pure γ-La₂S₃ with a cubic structure, as evidenced by X-ray powder diffraction data. The method is rather easy to implement and requires neither high temperatures nor vacuum apparatus.

Synthesis of γ-La2S3 via Treatment of La2O3 by Molten Sodium Thiocyanate with Potassium Cyanide Additions

摘要

Synthesis of γ-La₂S₃ via Treatment of La₂O₃ by Molten Sodium Thiocyanate with Potassium Cyanide Additions