Ce掺杂纳米NiFe_2O_4的制备及其对AP热分解催化性能影响  

Preparation of Ce doped NiFe_2O_4 nanoparticles and its catalysis on thermal decomposition of AP

作　　者：王雄彪[1] 张秋杰[1] 张幺玄[1] 陈厚和[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《固体火箭技术》2012年第4期504-507,共4页Journal of Solid Rocket Technology

基　　金：国家自然科学基金项目(90305008)

摘　　要：以硝酸镍、硝酸铁、硝酸铈为氧化剂,水溶性肼类燃料为还原剂,添加金属离子络合剂、分散剂,采用溶胶燃烧合成法制备了Ce掺杂的纳米NiFe2O4粉体,利用X-ray衍射仪(XRD)、红外光谱仪(FTIR)、透射电子显微镜(TEM)等仪器,对产物的形貌、结构进行表征,同时采用差示扫描量热仪(DSC)研究了产物对高氯酸铵(AP)热分解的催化作用。结果表明,所制备的纳米粉体粒径范围在30～60 nm,有良好分散性,Ce掺杂量在0.09以内,产物为单相尖晶石结构,没有杂相。随着Ce掺杂量的增加,产物使AP的高温分解峰温度逐渐降低,表观分解热增加。在Ce掺杂量为0.09时,使AP高温分解峰温度降低57.8℃,表现出较强的催化性能。Ce doped NiFe~ 04 nanoparticles were prepared via solgel combustion synthesis method. The morphology and struc ture of the products were characterized by XRD, FTIR and TEM. The catalysis of products on thermal decomposition of AP was in vestigated by DSC. The results indicate that the products have a good dispersity, with crystallite size ranging from 30 mm to 60 nm. As Ce content increases, nanoparticles can gradually decrease the thermal decomposition peak temperature of AP, and make total ap parent decomposition heat increase obviously. When Ce content reaches 0.09, the nanoparticles can make the hightemperature de composition peak value of AP decrease by 57.8 °C, which presents good catalytic effect. This work provides an economical approach to fabricate highly catalytic nanoparticles by a simple production process.

关 键 词：掺杂 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]