New Insights into the Catalytic Decomposition of Ammonium Perchlorate and Decomposition Mechanism by Nano-CuO Dispersed in Graphite-Carbon Nitride Nanosheet Composites

被引:10
作者
Shi, Zhe [1 ]
Tang, Changsheng [1 ]
Xu, Yidong [1 ]
Hu, Yinghui [1 ]
Zhang, Jian [1 ]
Zhu, Zhaoyang [2 ]
Zheng, Jian [3 ]
Fan, Ruiqing [1 ]
Xia, Debin [1 ]
Yang, Yulin [1 ]
机构
[1] Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Peoples R China
[2] Hubei Inst Aerosp Chemotechnol, Sci & Technol Aerosp Chem Power Lab, Xiangyang 441003, Hubei, Peoples R China
[3] China Aerosp Sci & Technol Corp, 16 Fucheng Rd, Beijing 100048, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Ammonium perchlorate; n-CuO-X/g-C3N4; composites; Catalytic decomposition mechanism; Solid propellant; REDUCED GRAPHENE OXIDE; THERMAL-DECOMPOSITION; SITU SYNTHESIS; NANOCOMPOSITE; TEMPERATURE; MN; FE;
D O I
10.1002/cnma.202200118
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Enhancing the exothermic decomposition of ammonium perchlorate (AP) is of great significance to obtain solid propellants with excellent combustion performance. Herein, we prepared a series of composites for catalyzing the exothermic decomposition of AP by a facile method with different masses of nano copper oxide (n-CuO) dispersed in graphene-nitride carbon (g-C3N4) nanosheets. Among them, n-CuO-8/g-C3N4 showed the best catalytic activity, which reduced the high-temperature decomposition (HTD) value by 95.0 degrees C, and increased the total heat release by 505 J.g(-1). The n-CuO-12/g-C3N4 also reduced the activation energy (E-a) of the HTD stage by 47.34 kJ.mol(-1). The catalytic mechanism study suggested that the n-CuO-X/g-C3N4 composites promoted the transition of electrons (e(-)) and holes (h(+)) from ClO4- to NH4+ and inhibited the recombination of e(-) and h(+), which further enhanced the exothermic decomposition of AP. During decomposition, the transformation of N2O to NO was significantly inhibited by the n-CuO-X/g-C3N4 composites, thus increasing the integral heat release as evidenced by Real-time thermogravimetry/Fourier transform infrared spectroscopy. This study illustrated that n-CuO-X/g-C3N4 composites are catalysts for the efficient decomposition of AP, which further enhance the energy performance of solid propellants.
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页数:8
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