高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (12): 1173.

• 研究论文 • 上一篇    下一篇

PrCl3-SrCl2-NaCl三元体系相图的研究

郑朝贵, 王晓临, 柴良, 乔芝郁, 叶于浦   

  1. 北京大学化学系
  • 收稿日期:1988-04-12 出版日期:1989-12-24 发布日期:1989-12-24
  • 通讯作者: 郑朝贵

An Investigation on the Phase Diagram of Ternary System PrCl3-SrCl2-NaCl

Zheng Chaogui, Wang Xiaolin, Chai Liang, Qiao Zhiyu, Ye Yupu   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1988-04-12 Online:1989-12-24 Published:1989-12-24

摘要: 借助于DTA和X射线结构分析研究了PrCl3-SrCl2-NaCl三元体系相图,发现本体系内有对应于PrCl3、SrCl2、NaCl和Sr3PrCl9的4个液相面、5条二次结晶线、1个三元低共熔点E(PrCl368.1,SrCl21.1,NaCl 30.8wt%;465℃)和三元转熔点P(PrCl365.0,SrCl27.0,NaCl 28.0 wt%;515℃).同时发现有1个固相下形成的不稳定化合物Y(在440℃分解).

关键词: PrCl3, PrCl3-SrCl2-NaCl三元体系, 相图

Abstract: The phase diagram of ternary systerm PrCl3-SrCl2-NaCl has been investigated by means of DTAand X-ray diffraction analysis.It was found that there are 4 fields corresponding to the primary crystallization of PrCl3, SrCl2, NaCl and Sr3PrCl9 respectively and 5 univarant lines related to the secondary crystallization in this system.The two reactions occured in this system are:(这里有图片19891202-1173-1.gif)Acompound, formed in the solid state,was found, and it decomposes at 440℃.

Key words: PrCl3, Ternary system PrCl3-SrCl2-NaCl, Phase diagram

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