Authors: Shilong Wei, Yifan Zhang, Haojie Tan, Zhengqiang Xia, Lianjie Zhai, Jun Hu, Qi Yang, Gang Xie, Zhong Chen, Sanping Chen
Published: 2024-05-21
Source: Full article
AbstractAs one of the main components of solid propellant, ammonium perchlorate (AP) shows slow sluggish decomposition kinetics with unconcentrated heat release. To achieve efficient catalytical decomposition, it is a significant challenge to design reasonable catalyst structure and explore the interaction between catalyst and AP. Herein, a series of porous carbon supported spinel‐typed homogeneous heterometallic composites CuxCo3−xO4/C via pyrolysis of MOF‐74‐Co doped Cu. On basis of precise electronic‐structure‐tuning through modulating Cu/Co ratio in MOF‐74, Cu0.15Co2.85O4/C with 5% Cu‐doping featuring oxygen vacancy concentration of 26.25% exhibits the decrease to 261.5 °C with heat release up to 1222.1 J g−1 (456.9 °C and 669.2 J g−1 for pure AP). The detail process of AP accelerated decomposition is approved by TG‐DSC‐FTIR‐MS technique. Density functional theory calculation revealed that in the Cu0.15Co2.85O4/C, the distinctive ability for NH3 catalyzed oxidation assisted with absorption performance of active porous C boosts accelerating AP decomposition. The findings would provide an insight for perceiving and understanding AP catalytic decomposition.