高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (11): 1660.

• 论文 • 上一篇    下一篇

碱金属和稀土溴化物Meyer反应的相化学研究(Ⅰ)──四元体系CsBr-LaBr3-HBr(12%)-H2O(25℃)的研究

王惠, 冉新权, 陈佩珩   

  1. 西北大学化学系, 西安, 710069
  • 收稿日期:1994-11-30 修回日期:1995-04-15 出版日期:1995-11-24 发布日期:1995-11-24
  • 通讯作者: 王惠,女,33岁,硕士.
  • 作者简介:王惠,女,33岁,硕士.
  • 基金资助:

    国家自然科学基金

Studies on Phase Chemistry of Meyer′s Reaction of Compound Formation in Alkali Metal Bromide/Rare Earth Metal Tribromide Systems (I) ──A Study on Quaternary System CsBr-LaBr3-HBr(12%)-H2O(25℃)

WANG Hui, RAN Xin-Quan, CHEN Pei-Heng   

  1. Department of Chemistry, Northwest University, Xi′an, 710069
  • Received:1994-11-30 Revised:1995-04-15 Online:1995-11-24 Published:1995-11-24

摘要: 研究了四元体系CsBr-LaBr3-HBr(12%)-H2O(25℃)的相化学关系,绘制了相应的溶度图。在该体系中发现一种新型化合物5CsBr·2LaBr3·22H2O;对该化合物进行了偏光、X射线粉末衍射、TG及DTA等方面的测定。将本体系与四元系CsCl-LaCl3-HCl(13%)-H2O(25℃)相比较,发现两者在生成化合物的数量、种类和相化学行为方面均有较大的差异。

关键词: Meyer合成反应, 四元体系, 三溴化镧, 溴化铯, 氢溴酸

Abstract: Phase chemistry relation of quaternary system CsBr-LaBr3-HBr (12%)-H2O at 25℃ was studied in this paper for the first time,the corresponding equilibrium diagram was constructed.Akind of new compound is discovered in the system,At the same time,X-ray powder diffraction, thermal analysis (TG and DTA) and polarization-character of the new compound obtained from the system were investigated.Comparing the system with quaternary system CsCl-LaCl3-HCl (13%)-H2O (25℃) ,bromide system and chloride system are very different in numbers,formula types of the compounds,and in phase chemical behavior.

Key words: Meyer′s reaction, Quaternary system, Lanthanum tribromide, Cesium bromide, Hydrobromic acid

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