Insight into the thermal decomposition properties of potassium perchlorate (KClO4)-based molecular perovskite

Studying thermal decomposition properties of the perchlorate-based molecular perovskite energetic materials is essential to facilitate the potential applications. In this work, thermal decomposition properties of potassium perchlorate (KClO4)-based molecular perovskite were investigated. Potassium perchlorate -based molecular perovskite (H 2 dabco)[K(ClO 4 ) 3 ] were prepared by the one-pot reaction of KClO 4 , HClO 4 and triethylenediamine (dabco). The samples were characterized. The results show that (H 2 dabco)[K(ClO 4 ) 3 ] has ternary organic-inorganic perovskite crystal structures. The thermal decomposition results demonstrated that molecular perovskite (H 2 dabco)[K(ClO 4 ) 3 ] has a lower decomposition temperature (383.6 °C) and a higher heat release (2815 J g −1 ) than 607.7 °C and 313 J g −1 of the monocomponent KClO 4 , respectively. The activation energy of thermal decomposition of (H 2 dabco)[K(ClO 4 ) 3 ] had been reduced appreciably from 191.2 kJ mol −1 to 177.7 kJ mol −1 . A synergistic catalysis thermal decomposition mechanism based on unique molecular perovskite structure was proposed. This work offers a novel understanding for thermal decomposition of the molecular perovskite energetic materials.