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[Sm_(4)(Hdtztp)_(2)O(OH)_(4)(H_(2)O)_(7)]·DMF·2H_(2)O,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。
The synthesis process of energetic materials is complex and dangerous.To explore the energetic materials with better safety performance,the crystalline energetic compound[Sm_(4)(Hdtztp)_(2)O(OH)_(4)(H_(2)O)_(7)]·DMF·2H_(2)O 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.
作者
祝若倩
胡月桥
吕磊
ZHU Ruoqian;HU Yueqiao;LÜLei(School of Chemistry and Chemical Engineering,Yan’an University,Yan’an 716000,China)
出处
《延安大学学报（自然科学版）》
2024年第1期51-56,共6页
Journal of Yan'an University：Natural Science Edition
基金
国家自然科学基金项目(21965037)。
关键词
双四唑
含能材料
热分解
热稳定性
热安全
Bistetrazole
energetic materials
thermal decomposition
thermal stability
thermal safety
