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Superior Thermostability, Good Detonation Properties, Insensitivity, and the Effect on the Thermal Decomposition of Ammonium Perchlorate for a New Solvent‐Free 3D Energetic Pb II ‐MOF
Author(s) -
Yang Qi,
Yang Guoli,
Zhang Wendou,
Zhang Sheng,
Yang Zhaohui,
Xie Gang,
Wei Qing,
Chen Sanping,
Gao Shengli
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201701325
Subject(s) - ammonium perchlorate , differential scanning calorimetry , detonation , detonation velocity , thermal decomposition , energetic material , thermogravimetric analysis , chemistry , materials science , thermostability , exothermic reaction , chemical engineering , inorganic chemistry , thermodynamics , organic chemistry , explosive material , physics , enzyme , engineering
A new solvent‐free energetic MOF, [Pb(HBTI)] n ( 1 ) (H 3 BTI=4,5‐bis(1 H ‐tetrazole)‐1 H ‐imidazole), has been synthesized under hydrothermal and acidic conditions. It was characterized by elemental analysis, IR, thermogravimetric, differential scanning calorimetry (DSC) and SEM. Single crystal X‐ray diffraction analysis revealed that 1 features a rigid 3D framework architecture free of solvent molecules. Thermal analysis demonstrated that the thermostability of 1 was up to 325 °C. 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 possesses potential application prospects in the field of explosives and propellants.