Ferrocene-based bimetallic composites: As a promoter for the decomposition of ammonium perchlorate

Enhancing the resistance to migration, efficiency, and energy of ferrocene-based catalysts is crucial for improving the thermal decomposition process of ammonium perchlorate (AP). This study focuses on the synthesis of three bimetallic composites catalysts based on ferrocenyl guanidine, namely CoM/FcDz (M = Cu²⁺, Zn²⁺, and Mn²⁺), to facilitate the deep decomposition of AP. These catalysts were chosen for their advantageous synergistic effects, abundant active sites, excellent conductivity, and high energy capacity. In addition, the cooperative action between cobalt (Co) and the second metal significantly enhances catalytic activity, facilitating the breakdown of N–H, O–H, and O-Cl bonds in AP intermediates, these bonds play a critical role in the overall decomposition process. The catalytic efficacy was evaluated using DSC, finding optimal results with 5 wt% CoMn/FcDz added to AP, and AP significantly reduced high-temperature decomposition by 143 °C and decreased apparent activation energy by 82.87 kJ/mol, while enhancing heat release by 1870 J/g. Additionally, the study delved into the catalytic mechanism of AP decomposition using TG-FTIR. This research offer promising catalyst candidates and novel insights into the catalytic decomposition of AP.