Thermal decomposition and combustion characteristics of molecular perovskite energetic material DAP-4 catalyzed by Co₃O₄ nanoclusters

Co₃O₄ nanoclusters were prepared by the gas phase precipitation method. The heating pyrolysis characteristics of molecular perovskite-based energetic material (H₂dabco)[NH₄(ClO₄)₃] (DAP-4) by using Co₃O₄ nanocluster catalysts was studied. Results showed that when 5mass% Co₃O₄ added, the initial pyrolysis temperature and the DTG peak temperature of DAP-4 were reduced to 256.8 ℃ and 340 ℃, respectively, at the heating rate of 10 K min⁻¹. When the average particle size (D ₅₀) of Co₃O₄ was 694 nm, the activation energy (E _a) required for heating catalytic pyrolysis of DAP-4 with the presence of Co₃O₄ decreased to 140.8 kJ mol⁻¹ (Kissinger’s method) and 143.6 kJ mol⁻¹ (Ozawa’s method). The heating catalytic pyrolysis mechanism of Co₃O₄ nanoclusters for the heating pyrolysis of DAP-4 was proposed. This work is helpful to understand further the heating catalytic pyrolysis characteristics of molecular perovskite-based energetic materials with metal oxide nanoclusters.