Zhang Juan, Chen Wanli, Li Haijian, Zhao Fengqi, Yi Jianhua, Jin Bo, Peng Rufang
State Key Laboratory of Environment-Friendly Energy Materials, School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang 621010, China.
Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
Langmuir. 2024 Jul 18. doi: 10.1021/acs.langmuir.4c00126.
This research delves into the preparation of heteronuclear bimetallic catalysts and explores their catalytic properties in the thermal decomposition of ammonium perchlorate (AP). The study's central focus is on enhancing the thermal decomposition characteristics of AP and, consequently, the combustion performance of composite solid propellants. The synthesized materials underwent structural characterization by XRD, XPS, SEM, and FTIR. Catalytic properties were examined using DTA tests. Notably, catalysts derived from calcination at 500 °C exhibited heightened catalytic activity. They advanced the pyrolysis temperature by 135.4 °C and reduced the activation energy by 82.38 kJ/mol compared with pure AP. To further elucidate the decomposition mechanism of AP, the investigation also employed a combined approach involving DSC-TG-FTIR-MS analysis.
本研究深入探讨了异核双金属催化剂的制备，并探索了它们在高氯酸铵（AP）热分解中的催化性能。该研究的核心重点是增强AP的热分解特性，进而提高复合固体推进剂的燃烧性能。通过XRD、XPS、SEM和FTIR对合成材料进行了结构表征。使用DTA测试检查了催化性能。值得注意的是，在500℃煅烧得到的催化剂表现出更高的催化活性。与纯AP相比，它们将热解温度提高了135.4℃，并将活化能降低了82.38kJ/mol。为了进一步阐明AP的分解机理，该研究还采用了DSC-TG-FTIR-MS分析的联合方法。
