Synynthesis and properties of crystalline energetic material[Sm4(Hdtztp)2O(OH)4(H2O)7]·DMF·2H2O
The synthesis process of energetic materials is complex and dangerous.To explore the energetic materials with better safety performance,the crystalline energetic compound[Sm4(Hdtztp)2O(OH)4(H2O)7]·DMF·2H2O was prepared using 2,5-bis(tetrazolium)terephthalic acid(H4dtztp)as precursor ligand by reaction with samarium nitrate by solvothermic method.It was characterized by elemental analysis,infrared spectroscopy and X-ray powder diffraction,and its thermal decomposition and non-isothermal kinetics were studied.The results showed that the compound belonged to the rhombic space group Pmmn with three-dimensional structure.Meanwhile,the compound had good thermal stability.The thermal ignition point temperature and critical temperature of the compound were 250℃ and 466.08℃ respectively,which showed good thermal safety.In addi-tion,the Gibbs free energy of the compound was 154.67 kJ·mol-1,indicating that the decomposition process of the compound was non-spontaneous.
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