碳纳米管负载氧化铋的制备及催化二硝酰胺铵热分解的研究(英文)

Preparation of Carbon Nanotubes Supporting Bismuth Oxide Nanometer Particle and Its Catalysis on Thermal Decomposition of Ammonium Dinitramide

采用微波辐射法制备了沉积于碳纳米管(CNTs)表面的氧化铋(Bi2O3)纳米粒子(Bi2O3/CNTs),用扫描电子显微镜(SEM)、光电子能谱(XPS)和X射线衍射(XRD)对制备的Bi2O3/CNTs纳米粒子进行了表征。研究了Bi2O3/CNTs纳米粒子对二硝酰胺铵(ADN)的催化热分解。结果表明,纳米Bi2O3均匀沉积在CNTs表面,平均粒径为8nm;添加3%Bi2O3/CNTs纳米粒子的ADN的初始热分解温度降低了12.8℃,热分解终止温度降低了29.3℃;NH4N(NO2)2→NH4NO3+N2O为ADN初始热分解的主导反应。

Carbon nanotubes （CNTs） supporting bismuth oxide （Bi2O3） nanometer particle （Bi2O3/CNTs） was prepared by the microwave radiation method. Bi2O3/CNTs nanometer particle was determined by means of scan electron microscopy （SEM）, X-ray photoelectron spectroscopy （XPS） and X-ray diffraction （XRD）. The catalytic property of Bi2O3/CNTs nanometer particle on thermal decomposition of ammonium dinitramide （ADN） was investigated by TG and DSC. The results show that nanometer Bi2O3 was coated uniformly on the surface of CNTs. Average size of nanometer Bi2O3 is 8nm. Initial thermal decomposition temperature and ending thermal decomposition temperature of ADN decrease 12.8℃ and 29.3℃, respectively when addition amount of Bi2O3/CNTs nanometer particle is 3%. NH4N（NO2）2→NH4NO3＋N2O is dominant reaction of initial thermal decomposition of ADN.