高等学校化学学报

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (2): 163.

• 论文 • 上一篇    下一篇

Li2SO4-MgSO4及LiNO3-Mg(NO3)2熔盐体系的研究

张启运, 卢敬智, 孙树人   

  1. 北京大学化学系
  • 收稿日期:1981-08-06 出版日期:1983-04-24 发布日期:1983-04-24

A STUDY ON THE BINARY SALTS SYSTEMS Li2SO4-MgSO4 AND LiNO3-Mg(NO3)2

Zhang Qiyun, Lu Jingzhi, Sun Shuren   

  1. Department of Chemistry, Beijing University, Beijing
  • Received:1981-08-06 Online:1983-04-24 Published:1983-04-24

PDF (PC)

摘要： 用目测变温法和差热分析法研究了Li2SO4-MgSO4、LiNO3-Mg(NO3)2熔盐体系。在前一体系中有固液异组成化合物Li2SO4·2MgSO4生成,它在832°熔化分解。化合物与Li2SO4间形成低共熔点,温度为647℃,组成含MgSO423.6Wt%。Li2SO4多晶转变点575℃,在加入MgSO4后形成类低共熔点,温度552℃,组成含MgSO44.2%。LiNO3-Mg(NO3)2为一简单低共熔体系,共晶点含Mg(NO3)247.3%,温度200℃。

Abstract: Astudy has been made of the binary salts systems Li2SO4-MgSO4 and LiNO3-Mg(NO3)2 by the visual polythermal and DTA methods. An incon-gruently melting compound Li2SO4·2MgSO4 occurring at 832℃ was found in the Li2SO4-MgSO4 system. The eutectic point between Li3SO4 and Li2SO4·2MgSO4 occurring at 647℃ lies in the composition of 23.6 Wt% MgSO4. The values of eutectoid are 4.2% MgSO4 and at 552℃. The system LiNO3-Mg(NO3)2 is of a simple eutectic type, the eutectic point occurring at 200℃ contains 47.3% Mg(NO3)2. No solid solution existed on the both sides of LiNO3 and Mg(NO3)2.

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