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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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    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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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.
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.

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History
  • Received:July 30,2018
  • Revised:October 02,2018
  • Adopted:September 07,2018
  • Online: September 18,2018
  • Published: November 25,2018