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Studies on the synthesis and thermal decomposition mechanisms of rare-earth metal (Pr, Nd, Sm) salt hydrates of 3-nitro-1,2,4-triazol-5-one

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Abstract

Three new rare-earth metal (Pr, Nd and Sm) salt hydrates of 3-nitro-1,2,4-triazol-5-one (NTO) were prepared and characterized. The thermal behaviour of the three salt hydrates, M(NTO)3·nH2O (M=Pr and Nd,n=9;M=Sm,n=8) were studied by means of TG and DSC under conditions of linear temperature increase. The thermal decomposition intermediates were determined by means of IR, MS and X-ray diffraction spectrometry. The thermal decomposition mechanisms of these hydrates were proposed as follows:

Zusammenfassung

Drei neue Seltenerdenmetallsalzhydrate (Pr, Nd und Sm) wurden erstmals hergestellt und charakterisiert. Bei linearer Temperaturerhöhung wurde mittels TG und DSC das thermische Verhalten der drei Salzhydrate mit der allgemeinen Formel (NTO)3·nH2O (M=Pr, Nd,n=9;M=Sm,n=8), gekennzeichnet als PrNTO, NdNTO und SmNTO, untersucht. Die Zwischenprodukte der thermischen Zersetzung wurden mittels IR-, MS- und Röntgendiffraktionsspektrometrie bestimmt. Für den thermischen Zerfall der genannten Hydrate wird folgender Mechanismus vorgeschlagen:

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Authors and Affiliations

  1. Xian Modern Chemistry Research Institute, Xian 710061, Shaanxi, People's Republic of China

    Xie Yi, Hu Rongzu, Zhang Tonglai & Li Fuping

Authors
  1. Xie Yi
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  2. Hu Rongzu
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  3. Zhang Tonglai
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  4. Li Fuping
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Additional information

We express our thanks to Professor Zhu Chunhua, Associate Professor Fu Xiayun, and Lecturers Fan Tao and Liang Yanjun for their help in this work.

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Yi, X., Rongzu, H., Tonglai, Z. et al. Studies on the synthesis and thermal decomposition mechanisms of rare-earth metal (Pr, Nd, Sm) salt hydrates of 3-nitro-1,2,4-triazol-5-one. Journal of Thermal Analysis 39, 41–51 (1993). https://doi.org/10.1007/BF02235445

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  • DOI: https://doi.org/10.1007/BF02235445

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