晶态含能材料[Sm4(Hdtztp)2O(OH)4(H2O)7]·DMF·2H2O的合成及性质
Synynthesis and properties of crystalline energetic material[Sm4(Hdtztp)2O(OH)4(H2O)7]·DMF·2H2O
祝若倩 1胡月桥 1吕磊1
作者信息
- 1. 延安大学 化学与化工学院,陕西 延安 716000
- 折叠
摘要
含能材料的合成过程复杂、危险性高,为探索安全性能更好的含能材料,采用溶剂热法以2,5-双(四唑)对苯二甲酸(H4dtztp)为前驱配体,与硝酸钐反应制备得到晶态含能化合物[Sm4(Hdtztp)2O(OH)4(H2O)7]·DMF·2H2O,运用元素分析、红外光谱和X射线粉末衍射等表征手段对其进行了表征,并对其进行了热分解和非等温动力学研究.结果表明,该化合物属于斜方空间群Pmmn,三维结构;同时该化合物具备良好的热稳定性;计算得到化合物的热着火点温度和临界温度分别为250℃和466.08℃,有较好的热安全性.此外,化合物的吉布斯自由能为154.67 kJ·mol-1,表明该化合物的分解过程为非自发反应.
Abstract
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.
关键词
双四唑/含能材料/热分解/热稳定性/热安全Key words
Bistetrazole/energetic materials/thermal decomposition/thermal stability/thermal safety引用本文复制引用
出版年
2024
NETL
NSTL
万方数据