高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (4): 426.

• 研究简报 • 上一篇    下一篇

LaCl3·4CH3CONH2·5H2O-H2O二元体系的研究

唐宗薰, 文玉秀, 李同生, 陈运生   

  1. 西北大学化学系
  • 收稿日期:1982-01-05 出版日期:1983-08-24 发布日期:1983-08-24

A STUDY ON BINARY SYSTEM LaCl3·4CH3CONH2·5H2O-HO

Tang Zongxun, Wen Yuxiu, Li Tongsheng, Chen Yunsheng   

  1. Chemistry Department, Northwestern University, Xi'an
  • Received:1982-01-05 Online:1983-08-24 Published:1983-08-24

摘要: Жолалиева З.М. 等人在LaCl3-CH3CONH2-H2O三元体系30℃时的研究中得到了一个三元复合物(前文文献[2]),我们对同一体系作了较为仔细的研究之后发现,该复合物的组成并非该作者报导的LaCl3·5CH3CONH2·5H2O,而是LaCl3·4CH3CONH2·5H2O。我们还对该复合物进行了初步研究,测定了密度,拍摄了显微照片和X-光粉末衍射图,并计算了d/n值(见前文)。本文作为前文工作的继续,对LaCl3·4CH3CONH2·5H2O-H2O二元体系进行了研究。

Abstract: The titled ternary compound has been prepared by mixing LaCI3·7H2O and CH3CONH2 in water with l:4 of the mole ratio of LaC13 to CH3CONH2。The solublities in the titled system at various temperatures as wellas the melting point of the ternary comPound were determined. Accor-ding to thesedata adlagram ofsolublllty ofblnary system LaCI3·4CH3CONH2·5H20-H2O was plotted.The temperature of the eutecticpoint is at-34.5℃ containing the ternary compound 61.3%. Theternary compound Is congruentlysoluble In water covering the tempera-ture range from the eutectlc point to its melting point.

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