应用化学 ›› 1993, Vol. 0 ›› Issue (3): 28-31.

• 研究论文 • 上一篇    下一篇

间硝基苯甲酸稀土配合物的热分解

王增林, 牛春吉, 马建方, 倪嘉缵   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室 130022 长春
  • 收稿日期:1992-06-16 修回日期:1992-11-16 出版日期:1993-06-10 发布日期:1993-06-10

THERMAL DECOMPOSITION OF RARE EARTH COMPLEXES WITH m-NITROBENZOIC ACID

Wang Zenglin, Niu Chunji, Ma Jianfang, Ni Jiazuan   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
  • Received:1992-06-16 Revised:1992-11-16 Published:1993-06-10 Online:1993-06-10

摘要: 用TG-DTA,高温X-射线衍射研究了稀土间硝基苯甲酸配合物LnL3·nH2O(n=2,Ln=La→Lu+Y;n=0,Ln=Sc,HL=间硝基苯甲酸)的热分解行为,DSC测定其脱水相变过程中的热力学函数,同时用透射电镜观察了热分解产物的超微性。

关键词: 间硝基苯甲酸, 稀土配合物, 热分解, 相变

Abstract: The rare earth complexes with m-nitrobenzoic acid (LnL3·nH2O, n=2,Ln=La-Lu and Y; n=0, Ln=Sc. HL=m-nitrobenzoic acid) were synthesized and characterized by elemental analysis and IR spectra. The mechanism of thermal decomposition of complexes were studied by means of TG-DTA and high temperature X-ray diffractometry. The activation energies and enthalpy changes of dehydration process of LnL3·2H2O were calculated. The phase change process of the complexes has been studied by DSC. The ultrafinity of the products of decomposition was observed.

Key words: m-nitrobenzioc acid, rare earth complex, thermal decomposition, phase change