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g-C3N4/Fe2O3复合催化剂的表征及其对AP的催化作用
王瑞浩,宋文魁,郭长平,冀威,王敦举
西南科技大学 四川省新型含能材料军民融合协同创新中心,四川 绵阳 621010
摘要:
为了改善固体推进剂中高氯酸铵(AP)热分解性能,降低其热分解温度,利用SEM,XRD,FT-IR对原位制备的g-C3N4/Fe2O3复合催化剂的形貌和结构进行了表征,通过差示扫描量热法(DSC)考察了催化剂对AP 热分解的催化效果。结果表明:g-C3N4/Fe2O3复合结构完整,Fe2O3颗粒紧密负载在g-C3N4上;加入不同质量分数的复合催化剂,AP的低温分解峰和高温分解峰都明显降低,且随着催化剂加入量的增加催化效果增强;加入复合催化剂质量分数5%时,高温分解峰和低温分解峰分别降低到348.1℃和281.7℃,表明g-C3N4/Fe2O3复合催化剂可有效降低AP的热分解温度,改善其热分解性能。
关键词:  固体推进剂  高氯酸氨  催化剂  g-C3N4  Fe2O3
DOI:10.13675/j.cnki.tjjs.210103
分类号:TJ55
基金项目:国家自然科学基金(22005253);四川省科技计划项目(19YYJC0788)。
Characterization of g-C3N4/Fe2O3 Composite Catalyst and Its Catalytic Effect on Ammonium Perchlorate
WANG Rui-hao, SONG Wen-kui, GUO Chang-ping, JI Wei, WANG Dun-ju
Sichuan Co-Innovation Center for New Energetic Materials,Southwest University of Science and Technology, Mianyang 621010,China
Abstract:
In order to improve the thermal decomposition performance of AP in solid propellant and reduce its thermal decomposition temperature, the morphology and structure of g-C3N4/Fe2O3 obtained in situ were characterized by SEM, XRD and FT-IR, and the catalytic effect of AP thermal decomposition was investigated by Differential Scanning Calorimeter(DSC). The results show that the composite structure of g-C3N4/Fe2O3 was complete, and the Fe2O3 particles were closely loaded on g-C3N4.When different mass fraction of composite catalyst was added, the low temperature decomposition peak and high temperature decomposition peak of AP were significantly reduced, and the catalytic effect was enhanced with the increase of catalyst addition amount. When the mass fraction of composite catalyst was 5%, the high temperature decomposition peak and the low temperature decomposition peak of AP reduced respectively to 348.1℃ and 281.7℃. These results indicate that g-C3N4/Fe2O3 composite catalyst could effectively reduce the thermal decomposition temperature of AP and improve its thermal decomposition performance.
Key words:  Solid propellant  Ammonium perchlorate  Catalyst  g-C3N4  Fe2O3