摘要
以石墨烯为载体,采用两步法制备了CuCr2O4/石墨烯复合粒子,通过X射线衍射仪(XRD)、透射电子显微镜(TEM)对样品的结构及形貌进行了表征,并采用差示扫描量热仪(DSC)分别研究了CuCr2O4、CuCr2O4/石墨烯、石墨烯及CuCr2O4和石墨烯的混合物对AP的催化效果。结果表明,CuCr2O4纳米粒子较均匀地分布在石墨烯上,CuCr2O4/石墨烯复合粒子使AP高温分解峰温度降至382℃,降低了60℃,表观分解热增加了351J/g,达1188J/g,其催化效果明显优于CuCr2O4、石墨烯及CuCr2O4和石墨烯的混合物。
CuCr2O4/graphene composites were synthesized by two-step method with graphene as a carrier.The microstructure and morphology were confirmed by X-ray diffraction（XRD） and transmission electron microscopy（TEM）. The catalysis of CuCr2O4,CuCr2O4/graphene,graphene and the mixture of CuCr2O4 and graphene on thermal decomposition of AP was investigated by DSC. The results show that copper chromic nanoparticles are coated on graphene sheets, without apparent aggregation. CuCr2O4/graphene composites make the high temperature exothermic peak of ammonium perchlorate decrease by 60℃ and the apparent decomposition heat increase from 837 to 1188J/g. The catalytic propertie of CuCr2O4/graphene is superior to that of CuCr2O4, graphene and the mixture of CuCr2O4 and graphene.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2015年第8期1257-1261,共5页
Journal of Propulsion Technology
关键词
复合催化剂
AP热分解
催化
石墨烯
Composite catalysts
Thermal decomposition of AP
Catalysis
Graphene
