CHINESE JOURNAL OF ENERGETIC MATERIALS
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无溶剂的能量Ag(Ⅰ)-MOFs的制备及爆炸与安全性能
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1.西北大学化学与材料科学学院;2.合成与天然功能分子化学教育部重点实验室;3.西安近代化学研究所

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国家自然科学基金资助(21727805,21673180,21703135,21673181,21773185和21803042)


Preparation, Detonation and Safety Performance of the Solvent-Free Energetic Ag(Ⅰ)-MOFs
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1.College of Chemistry and Materials Science, Northwest University, Xi′an 710127, China;2.Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Xi′an 710127, China;3.Xi′an Modern Chemistry Research Institute, Xi'an 710065, China

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    摘要:

    基于含能配体3,5-二硝基-1-氢-1,2,4-三唑(2-Hntz)和3,4-双(1-氢-5-四唑基)-氧化呋咱(H2BTOF),水热条件下制备了两例无溶剂的能量Ag(Ⅰ)-MOFs,[Ag2(2-ntz)2]n1)和[Ag2(BTOF)]n2)。单晶衍射分析表明,Ag+中心均为三配位,化合物1为由2-ntz-采取μ3-1,2,4模式桥联金属形成的三维框架结构(ρ1=2.805 g·cm-3),化合物2是由BTOF2-通过五齿桥连-螯合模式连接金属形成的二维折叠层状结构(ρ2=3.101 g·cm-3)。综合热分析(TG-DSC)测试表明,化合物12均具有较高的热稳定性,在240 ℃以前保持框架稳定。以氧弹热量计测定了化合物12的恒容燃烧热并计算得到标准摩尔生成焓分别为(1375.74±1.27)kJ·mol-1和(1647.42±1.46)kJ·mol-1。爆轰和安全性能分析表明,化合物12的爆热、爆速和爆压值分别为5.55 kJ·g-1和3.78 kJ·g-1,8.97 km·s-1和7.69 km·s-1,44.87 GPa和34.37 GPa,对撞击和摩擦不敏感,属潜在的高能钝感材料。

    Abstract:

    Based on energetic ligands 3, 5-dinitro-1-H-1, 2, 4-triazole and 3, 4-bis (1H-5-tetrazolyl) furoxan, two solvent-free ener-getic Ag(Ⅰ)-MOFs, [Ag2(2-ntz)2]n(1) and [Ag2(BTOF)]n(2) have been prepared under hydrothermal conditions. Single-crys-tal X-ray analysis reveals that the Ag+ centersin both Ag(Ⅰ)-MOFs are three-coordinated. Compound 1 features a 3D framework (ρ1=2.805 g·cm-3) constructed by 2-ntz- ligands bridging metal ions with a μ3-1, 2, 4 mode. Compound 2 presents a 2D folded layer structure (ρ2=3.101 g·cm-3) formed by BTOF2- ligands linking metal ions with aquinquedentatechelating-bridging coordina-tionmode. TG-DSC curves demonstrate that both compounds 1 and 2 keep stable until 240 ℃, exhibiting high thermal stability. The heats of combustion of 1 and 2 are determined by oxygen-bomb calorimeter, and the corresponding standard molar enthal-pies of formationare determined to be (1375.74±1.27)kJ·mol-1 and (1647.42±1.46)kJ·mol-1, respectively. The detonation and safety performance analyses show that the heat of detonation, detonation velocityand detonationpressureof compounds 1 and 2 are, respectively calculated as 5.55 kJ·g-1 and 3.78 kJ·g-1, 8.97 km·s-1 and 7.69 km·s-1, as well as 44.87 GPa and 34.37 GPa. Both compounds 1 and 2 are insensitive to impact and friction, and are good high energy yet low sensitivity materials.

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引用本文

屈晓妮,翟连杰,夏正强,等.无溶剂的能量Ag(Ⅰ)-MOFs的制备及爆炸与安全性能[J].含能材料, 2018, 26(11):937-944. DOI:10.11943/CJEM2018220.
QU Xiao-ni, ZHAI Lian-jie, XIA Zheng-qiang, et al. Preparation, Detonation and Safety Performance of the Solvent-Free Energetic Ag(Ⅰ)-MOFs[J]. Chinese Journal of Energetic Materials, 2018, 26(11):937-944. DOI:10.11943/CJEM2018220.

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历史
  • 收稿日期: 2018-07-30
  • 最后修改日期: 2018-10-02
  • 录用日期: 2018-09-07
  • 在线发布日期: 2018-09-18
  • 出版日期: 2018-11-25