Abstract

The processes that occur during the reactions of barium and strontium chlorides with sodium orthophosphate in the melts based on LiCl–KCl (550°C) and NaCl–KCl–CsCl eutectic mixtures (650°C), a NaCl–KCl equimolar mixture (750°C), and a NaCl–KCl–CsCl–LaCl₃ melt (650°C) in an inert atmosphere are studied. The compositions of the formed poorly soluble phosphates are determined by chemical and X-ray diffraction analyses. The influence of the molar ratio of phosphate ions to Sr²⁺/Ba²⁺ on the phase composition of the precipitated phosphates is studied. The conditions required for the quantitative precipitation of strontium and barium as phosphates from the melt are determined.

中文翻译：

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氯化物熔体中磷酸钡和磷酸锶的形成

摘要

在基于 LiCl-KCl (550°C) 和 NaCl-KCl-CsCl 共晶混合物 (650°C)、NaCl-KCl 等摩尔混合物 (750 °C) 和惰性气氛中的 NaCl–KCl–CsCl–LaCl ₃熔体 (650°C)。形成的难溶性磷酸盐的组成通过化学和 X 射线衍射分析确定。研究了磷酸盐离子与Sr ²⁺ /Ba ²⁺的摩尔比对沉淀磷酸盐相组成的影响。确定了从熔体中以磷酸盐形式定量沉淀锶和钡所需的条件。