纳米NiO/MgO的制备及其对AP热分解催化性能影响  

Preparation of nanometer NiO/MgO and its catalytic performance for thermal decomposition of ammonium perchlorate

作　　者：谈玲华[1,2] 李勤华[3] 杭祖圣[3,2] 潘仁明[3] 姜炜[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 [2]南京工程学院材料工程学院,南京211167 [3]南京理工大学化工学院,南京210094

出　　处：《固体火箭技术》2011年第2期214-219,共6页Journal of Solid Rocket Technology

基　　金：国家自然科学基金资助项目(50972060);江苏省2009年度普通高校研究生科研创新计划资助项目(CX09B_095Z);南京理工大学自主科研专项计划资助项目(2010ZYTS015)

摘　　要：采用浸渍法制备出纳米NiO/MgO复合氧化物粒子,运用X射线衍射(XRD)、X射线能谱仪(EDS)等对产物的物相和组成进行了表征,并研究了单一纳米粒子(NiO、MgO)、纳米NiO+MgO混合粒子及纳米NiO/MgO复合氧化物粒子对AP热分解的催化性能。结果表明,所制备的纳米NiO/MgO复合氧化物粒子中NiO粒子高度分散于MgO载体中。纳米NiO/MgO复合氧化物粒子可使AP的高温分解峰温降低92.2℃,高低温分解峰温差减小到10.6℃,表现出较强的催化性能,其催化性能优于单一纳米粒子(NiO、MgO)、纳米NiO+MgO混合粒子。纳米MgO的载体支撑作用,可防止NiO纳米粒子的团聚,增加反应活性中心,从而提高催化效果。The nanometer NiO/MgO composite particles were prepared via impregnation method.The phase and morphology of NiO/MgO composites were characterized by X-ray diffraction,transmission electron microscopy and energy dispersive X-Ray spectroscopy.The catalysis of nanometer particles（NiO,MgO）,NiO＋MgO mixture particles and NiO/MgO composite particles the thermal decomposition of ammonium perchlorate（AP） was investigated by DSC.The Results show that NiO particles are highly dispersed on the MgO support.Catalytic performance of the obtained nanometer NiO/MgO composite particles is superior to that of corresponding single ingredient and NiO＋MgO mixture particles.Nanometer NiO/MgO can make the high-temperature decomposition peak value of AP decrease by 92.2 ℃ and the temperature difference value between the low and high temperature decomposition peak reduce up to 10.6 ℃,which indicates good catalytic performance.The supporting effect of the nanometer MgO can effectively prevent the aggregation of NiO particles and increase the active sites.

关 键 词：纳米NiO/MgO复合粒子 高氯酸铵 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]