摘要
分别采用重结晶法和中和反应法制备了碳纳米管/硝酸钾(CNTs/KNO3)纳米复合粒子,运用扫描电镜(SEM)、X射线衍射能谱(XRD)、比表面积(SSA)和差热分析(DSC)等手段对复合粒子进行了表征。结果表明:两种制备过程实现了KNO3在CNTs外表面的负载,重结晶法制备的复合粒子的比表面积比CNTs降低了113.9 m2.g-1,热分解温度与KNO3相当;反应法制备的复合粒子的比表面积比CNTs降低了138.7 m2.g-1,热分解温度比KNO3降低了28℃。表明反应法制备的样品中,CNTs对KNO3的热分解过程具有催化作用。
The carbon nano-tubes/potassium nitrate（CNTs/KNO3） composites were prepared by recrystalization and neutralization method respectively.Micro-morphologies and thermal decomposition properties were characterized by scanning electron mitroscope（SEM）,X-ray diffraction（XRD）,specific surface area（SSA） and differential scanning calorimeter（DSC）.The results show that KNO3 is coated on the surface of CNTs by two methods.SSA of the nano-CNTs/KNO3 composites by recrystalization decreases about 113.9 m^2·g^-1 compared with that of CNTs,while the thermal decomposition temperature is the same as that of KNO3.SSA of the nano-CNTs/KNO3 composites prepared by neutralization decreases about 138.7 m^2·g^-1 compared with that of CNTs,and the thermal decomposition temperature decreases about 28 ℃ compared with that of KNO3.Results show that in neutralization,CNTs has catalytic effect on the thermal decomposition of KNO3.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2009年第6期685-688,共4页
Chinese Journal of Energetic Materials
基金
国防预研基金(812975090017341040)
关键词
物理化学
CNTS
KNO3
纳米粒子
热分解
physical chemistry
carbon nano-tubes（CNTs）
KNO3
nano-composite
thermal decomposition
