乳化炸药爆轰合成纳米氧化铈及表征  

Detonation Synthesis and Characterization of Nano-Ceria with Emulsion Explosives

作　　者：韩志伟[1] 解立峰[1] 邓吉平[1] 倪欧琪[1] 解一超[1] 陈际洋[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《高压物理学报》2014年第3期319-323,共5页Chinese Journal of High Pressure Physics

基　　金：江苏省普通高校研究生科研创新计划项目(CXZZ12_0178);江苏省自然科学基金(BK20130760)

摘　　要：为通过爆轰法合成纳米氧化铈,设计并制备了以Ce(NO3)3·6H2O为主要氧化剂的5种乳化炸药。综合考虑Ce(NO3)3含量对乳化炸药爆速的影响和纳米氧化铈的得率,筛选出适用于爆轰法制备纳米氧化铈的乳化炸药配方。通过在爆炸罐中起爆乳化炸药,制备得到了纳米氧化铈。利用X射线衍射仪(XRD)和透射电镜(TEM)对样品进行表征。XRD测试结果表明,乳化炸药爆轰法合成的纳米氧化铈属于立方晶系,理论粒径为74nm。TEM测试结果表明,合成的纳米氧化铈外观呈球形,具有较好的分散性和粒度均一性,平均粒径为70nm。In order to synthesize nano-ceria by detonation method,5kinds of emulsion explosives in which Ce（NO3）3·6H2O acted as main oxidant were designed and prepared.Considering the effects of the content of Ce（NO3）3on the detonation velocity of emulsion explosives and the yield of nano-ceria,the formulas of emulsion explosives for preparing nano-ceria were screened.Nano-ceria was synthesized by initiating the emulsion explosive in explosion vessel.The as-synthesized products were characterized by XRD and TEM.The result from XRD test indicates that the nano-ceria belongs to cubic phase.The mean size of ceria grain is 74 nm based on the calculation result according to Scherrer equation.The result from TEM test presents that the as-synthesized ceria particles are spherical by appearance,they have well dispersion and the size was uniform.According to TEM test result,the mean diameter of ceria particles is about 70 nm,which coincides with the calculation result perfectly.

关 键 词：纳米氧化铈 爆轰合成 乳化炸药 爆速 

分 类 号：O614.33[理学—无机化学] O389[理学—化学]