A Comparison of Catalytic Effect of Nano‐Mn3O4 derived from MnC2O4.2H2O and Mn(acac)3 on Thermal Decomposition of Ammonium Perchlorate

The formation and catalytic effect of Mn 3 O 4 spinel nanoparticles on thermal decomposition of ammonium perchlorate (AP) were investigated and compared to two manganese precursors of MnC 2 O 4 · 2H 2 O and Mn(acac) 3 . The catalytic effects of two coated precursors on AP thermal decomposition were measured by differential scanning calorimetric (DSC) and thermogravimetric analysis (TG). The MnC 2 O 4 · 2H 2 O@AP composite showed a decrease in the decomposition temperature of AP from 428.35 to 310.93 °C in one step, whereas for the Mn(acac) 3 @AP composite, the thermal decomposition was seen in two steps at 288.04 and 323.875 °C. The kinetic triplet of activation energy ( E a ), frequency factor (log A ) and model of mechanism function [f( α )] of thermal decomposition for pure ammonium perchlorate,MnC 2 O 4 · 2H 2 O@AP and Mn(acac) 3 @AP were investigated via two model‐free (FWO, KAS and Starink) and model‐fitting (Starink) methods at different conversions of α ( α = 0.05–0.95). Also, the thermodynamic parameters were obtained via activation energy and frequency factor for different concentrations of catalysts.