Fe_2O_3/CNTs复合粒子的制备及其对AP热分解催化性能的影响  

Preparation of Fe_2O_3/CNTs composites and its catalysis on thermal decomposition of AP

作　　者：姜炜[1] 刘建勋[1] 刘永[1] 崔平[1] 李凤生[1] 

机构地区：[1]南京理工大学国家特种超细粉体工程技术研究中心,南京210094

出　　处：《固体火箭技术》2008年第1期65-68,78,共5页Journal of Solid Rocket Technology

基　　金：国家自然科学基金项目(No.50602024)

摘　　要：以碳纳米管(CNTs)为载体,采用溶胶-凝胶法制备了Fe2O3/CNTs复合粒子,应用红外光谱仪(FT-IR)、X-ray衍射仪(XRD)、扫描电子显微镜(SEM)、X射线能谱(EDS)、比表面积分析仪(BET)等手段对产物的结构、形貌、粒度和比表面积进行表征,并用差示扫描量热仪(DSC)研究了纯CNTs、CNTs和Fe2O3简单混合、Fe2O3/CNTs复合粒子及不同比例Fe2O3/CNTs复合粒子对AP热分解的催化作用。结果表明,Fe2O3/CNTs复合粒子结晶好、包覆均匀、比表面积大。Fe2O3/CNTs复合粒子可显著降低AP热分解峰温,使总表观分解热明显增加,高温分解的表观活化能降低,热分解反应速率常数增加,表现出显著的催化效果。Taking carbon nanotubes （CNTs） as carrier, Fe2O3/CNTs composite particles were prepared by sol-gel method. The structure, morphology, particle size and specific surface area of the products were characterized by means of FT-IR, XRD, SEM, EDS and BET. The catalysis of pure CNTs, mixture of CNTs and Fe2O3, Fe2O3/CNTs composite particles with different ratio on thermal decomposition of AP was investigated by DSC. The results show that Fe2O3/CNTs composite particles possess better crytallization, more uniform coating and greater specific surface area; Fe2O3/CNTs composite particles can reduce thermal decomposition peak temperature of AP so as to make total apparent decomposition heat increase obviously, and decrease apparent activation energy of high-temperature decomposition of AP so as to make reaction rate constant of thermal decomposition increase, which presents perfect catalytic effect.

关 键 词：Fe2O3/CNTs 复合粒子 AP 热分解 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]