Superior thermostability, good detonation property, insensitivity and effect on the thremal decomposition of ammonium perchlorate of a new solvent-free 3D energetic Pb(II)-MOF.

Author(s) Yang, Q.; Yang, G.; Zhang, W.; Zhang, S.; Yang, Z.; Xie, G.; Wei, Q.; Chen, S.; Gao, S.
Journal Chemistry
Date Published 2017 May 06

A new solvent-free energetic MOF, [Pb(HBTI)]n (1) (H3BTI = 4,5-bis(1H-tetrazole)-1H-imidazole), has been synthesized under hydrothermal and acidic conditions. It were characterized by elemental analysis, IR, TG, DSC and SEM. Single crystal X-ray diffraction analysis revealed that 1 features a rigid 3D framwork architecture without solvent molecules. Thermoanalysis demonstrated that the thermostability of 1 was up to 325 oC. Non-isothermal kinetic and apparent thermodynamic parameters of exothermic decomposition process of 1 were determined by Kissinger's and Ozawa's methods. Through oxygen-bomb combustion calorimetry, the standard molar enthalpy of formation of 1 was determined. The calculated detonation properties (heat of detonation, detonation velocity and detonation pressure) and sensitivity tests of 1 were carried out. In addition, 1 was explored as combustion promoter to accelerate the thermal decompositions of ammonium perchlorate (AP) by differential scanning calorimetry. Experimental results indicated that 1 possess potential application prospect in the field of explosive and propellant.

DOI 10.1002/chem.201701325
ISSN 1521-3765
Citation Chemistry. 2017.

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