四氧化三钴@碳化蝶翅的制备及催化高氯酸铵分解的性能  

Cobalt Oxide @ Carbonized Wings Composite: Preparation and Catalytic Performance for Decomposition of Ammonium Perchlorate

作　　者：郑远川[1] 李兆乾[1] 徐娟[1] 马拥军[1] 裴重华[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室--省部共建国家重点实验室培育基地,四川绵阳621010

出　　处：《含能材料》2016年第3期256-260,共5页Chinese Journal of Energetic Materials

基　　金：四川省非金属复合与功能材料重点实验室开放基金(13zxfk21)

摘　　要：采用水热法制备了四氧化三钴@碳化蝶翅(Co_3O_4@CW)纳米复合材料。利用X射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、比表面及孔径分析仪表征了其结构和成分。采用同步热分析仪(DSC-TG)研究了该复合材料对高氯酸铵(AP)热分解的催化性能。结果表明,Co_3O_4@CW具有微孔-介孔-大孔的多级孔结构,Co_3O_4纳米粒子均匀紧密地负载于碳化蝶翅的骨架上,其中Co_3O_4的负载量约为72.0%。Co_3O_4@CW可显著降低AP的高温分解峰温度,当Co_3O_4@CW的添加量为3%时,AP的高温分解峰提前147℃,AP的热分解放热量从173.4 k J·mol^(-1)增加到369.3 k J·mol^(-1),表现出了良好的催化性能。The cobalt Oxide @ carbonized wings nanocomposites （Co3O4@ CW） were prepared by hydrothermal method. The struc- ture and composition of Co3O4 CW were characterized by X-ray diffraction （XRD）, field emission scanning electron microscope （FESEM）, transmission electron microscope （TEM）and the surface area and pore size analyzer. The thermal decomposition of am- monium perchlorate （AP） in the presence of Co3O4@ CW was investigated by simultaneous thermal analyzer （DSC-TG）. Results show that Co3O4@ CW nanocomposites possess the hierarchical micro-, meso- and macro-porous structure, and Co3O4 nanoparti- cles load on the skeleton of the carbonized wings in uniform and compact form. In which, the load of Co3O4 is about 72.0%. The Co3O4 @ CW can significantly reduce the temperature of the high temperature decomposition peak of AP . When the addition amount of Co3O4@ CW is 3%, it makes the temperature of the high temperature decomposition peak of AP decrease by 147 ℃ and the apparent heat of decomposition increase from 173.4 kJ · mol-1 to 369.3 kJ · mol-1 ,indicating a good catalytic performance.

关 键 词：多孔碳 蝶翅 四氧化三钴(Co3O4) 高氯酸铵(AP) 催化 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]