中华医学超声杂志

应用化学 ›› 1983, Vol. 0 ›› Issue (1): 66-72.

• 研究论文 • 上一篇    下一篇

稀土硝酸盐冠醚络合物的研究(Ⅳ)—Y(NO3)3·3H2O-B15C5-CH3COCH3三元体系在18℃时溶解度的研究

任德厚, 蒋海盈, 薛鸿福, 戴仓定, 王犁   

  1. 西北大学化学系
  • 收稿日期:1983-04-20 修回日期:1983-05-30 出版日期:1983-12-10 发布日期:1983-12-10

COMPLEXES OF CROWN ETHER WITH RARE EARTH NITRATES Ⅳ.STUDIES ON THE SOLUBILITY OF THE TERNARY SYSTEM Y(NO3)3·3H2O-B15C5-CH3COCH3 AT 18℃

Ren Dehou, Jiang Haiing, Xue Hongfu, Dai Cangding, Wang Li   

  1. Department of Chemistry, Northwest University, Xian
  • Received:1983-04-20 Revised:1983-05-30 Published:1983-12-10 Online:1983-12-10

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摘要： 利用半微量相平衡方法,研究了Y(NO3)3·3H2O-B15C5-CH3COCH3三元体系在18℃时的溶解度。结果指出:该体系的溶解度曲线由两支组成,其中较长的一支与盐、醚摩尔比为1:1的络合物Y(NO3)3·B15C5.3H2O·2·5CH4COCH3的固相相对应。未发现其他化学计量络合物存在。无论是在液相,还是在固相,在平衡过程中,水与硝酸钇的摩尔比总是3:1。对所生成的固态络合物组成,通过红外光谱和化学分析做了进一步的考查。研究了它们与后处理条件的关系。

Abstract: The solubility of the ternary system, Y(NO3)3·3H2O-B15C5-CH3 COCH3 at 18℃ has been determined by a phase equilibrium method. The results indicated that there are two solubility curves for the system, the long one correspounds with the solid phase of the complex,Y(NO3)3·B15C5·3H2O 2.5CH3COCH3 and the short one with that of B15C5. There was a failure to achieve other complex species with another Y/crown ratios. The behavior of water for this system in equilibrium has been exami-ned. The results are:the mole ratio,(H2O/Y(NO3)3), no matter whether it is in liquid phase or solid phase, is always 3:1. The composition of the isolated complex have been examined by chemical anaiysis, infrared spectra and thermogravimetric analysis,as well as the rela-tion between the composition of complexes and aftertreament conditions. A relatively stable complex,Y(NO3)3. B15C5·3H2 O·0.65CH3COCH3 was obtained.

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