| 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1188 J/g，其催化效果明显优于CuCr2O4、石墨烯及CuCr2O4和石墨烯的混合物。 |
| 关键词: 复合催化剂 AP热分解 催化 石墨烯 |
| DOI： |
| 分类号: |
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| Synthesis of Copper Chromite/Graphene Nanocomposites and Its Characterization as Catalyst for AP |
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LIU Huan-huan,JIANG Wei,HAO Ga-zi
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(National Special Superfine Powder Engineering Research Center，Nanjing University of Science and Technology，Nanjing 210094，China)
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| Abstract: |
| 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. |
| Key words: Composite catalysts Thermal decomposition of AP Catalysis Graphene |
