纳米Fe_2O_3的批量制备及其对高氯酸铵催化的粒径选择特性  

Production of nano-sized Fe_2O_3 and its thermal decomposition catalysis characteristics on the particlesize of ammonium perchlorate

作　　者：郝嘎子 刘杰[1] 高寒[1] 肖磊[1] 柯香[1] 乔羽[1] 姜炜[1] 赵凤起[2] 

机构地区：[1]南京理工大学化工学院国家特种超细粉体工程技术研究中心,南京210094 [2]西安近代化学研究所燃烧与爆炸技术重点实验室,西安710065

出　　处：《固体火箭技术》2016年第1期73-77,82,共6页Journal of Solid Rocket Technology

基　　金：基础产品创新技术火炸药科研专项;国家自然科学基金(51206081)

摘　　要：采用HLG-5型纳米化粉碎机批量制备了纳米Fe2O3。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)对Fe2O3颗粒的结构、大小及形貌进行了表征,并采用差示扫描量热仪(DSC)研究了纳米Fe2O3对不同粒度高氯酸铵(AP)的热分解性能的影响。结果表明,制备的Fe2O3颗粒大小约13 nm,为α-Fe2O3,呈类球形。2%含量的纳米Fe2O3对6μm AP具有更好的催化性能,可使其高、低温分解峰分别降至392.1、298.2℃;表观分解热增加至1 519 J/g;反应速度常数明显提高。Nano-Fe2O3 was successfully prepared in large-scale using the HLG-5 grinder. The microstructure,size and morphology of Fe2O3 particles were characterized by X-ray diffraction（ XRD）,scanning electron microscopy（ SEM） and transmission electron microscopy（ TEM）. The catalytic effects of nano-Fe2O3 on thermal decomposition of ammonium perchlorate（ AP） with different size were investigated by DSC. The results show that nano-Fe2O3 could be indexed as a pure α-Fe2O3 and have a semi-spherical morphology with a fairly uniform size of 13 nm. Furthermore,the nano-sized Fe2O3 has the optimal catalytic effect on thermal decomposition of 6 μm AP at a mass fraction of 2%,the peak temperatures of high and low temperature decomposition of AP decrease to392. 1 ℃ and 298. 2 ℃,respectively,the apparent thermal decomposition of AP increases to 1 519 J / g,and the reaction rate constant of AP also increases obviously.

关 键 词：纳米Fe2O3 AP 热分解 催化效果 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]