Thermal studies of novel molecular perovskite energetic material (C₆H₁₄N₂)[NH₄(ClO₄)₃]

(C₆H₁₄N₂)[NH₄(ClO₄)₃] is a newly developed porous hybrid inorganic-organic framework material with easy access and excellent detonation performances, however, its thermal properties is still unclear and severely hampered further applications. In this study, thermal behaviors and non-isothermal decomposition reaction kinetics of (C₆H₁₄N₂)[NH₄(ClO₄)₃] were investigated systematically by the combination of differential scanning calorimetry (DSC) and simultaneous thermal analysis methods. In-situ FTIR spectroscopy technology was applied for investigation of the structure changes of (C₆H₁₄N₂)[NH₄(ClO₄)₃] and some selected referents for better understanding of interactions between different components during the heating process. Experiment results indicated that the novel molecular perovskite structure renders (C₆H₁₄N₂)[NH₄(ClO₄)₃] better thermal stability than most of currently used energetic materials. Under high temperatures, the stability of the cage skeleton constructed by NH₄ ⁺ and ClO₄ ⁻ ions determined the decomposition process rather than organic moiety confined in the skeleton. The simple synthetic method, good detonation performances and excellent thermal properties make (C₆H₁₄N₂)[NH₄(ClO₄)₃] an ideal candidate for the preparation of advanced explosives and propellants.