中文摘要：

采用溶胶凝胶法和水热法制备了纳米Fe2O3颗粒,考察了阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）对纳米Fe2O3粒径分布的影响,用X射线粉末衍射（XRD）、扫描电子显微镜及能量散射光谱（SEM-EDS）、傅里叶变换红外光谱（FT-IR）对产物进行了表征.通过MDIJade 5.0分析发现,在相同实验条件下加入表面活性剂可以缩小纳米Fe2O3的粒径分布范围.采用超声复合法制备了NTO-纳米Fe2O3复合物,用差示扫描量热（DSC）和热重/微分热重（TG/DTG）考察了纳米Fe2O3对NTO热分解的催化性能以及复合物的热分解机理.用Kissinger法、Ozawa法和积分法计算非等温动力学参数,发现Fe2O3可降低NTO热分解的表观活化能,复合物热分解反应的表观活化能为290.82 kJ/mol,指前因子为1025.19s-1.

英文摘要：

The Fe2O3 nanoparticles were prepared by sol-gel and hydrothermal methods.The effect of surfactant cetyl trimethyl ammonium bromide （CTAB） on the size distribution of Fe2O3 nanoparticles was studied.The products were characterized by X-ray powder diffraction （XRD）,scanning electron microscope-energy dispersive spectrometry （SEM-EDS） and Fourier transform infrared （FT-IR）.It is found that the addition of CTAB can narrow the particle size distribution of Fe2O3 under the same conditions by MDIJade 5.0.The NTO-Fe2O3 nanoparticles were synthesized by ultrasonic composite technique.The effect of Fe2O3 nanoparticles on catalytic pyrolysis of NTOand the thermal decomposition mechanism of the composite were studied by differential scanning calorimetry （DSC）and thermogravimetry/differential thermogravimetry （TG/DTG）.The kinetic parameters of non-isothermal thermal decomposition reaction were calculated by Kissinger,Ozawa and integral methods.The results show that Fe2O3 can greatly decrease the thermal decomposition apparent activation energy of NTO.The apparent activation energy of the composite is 290.82 kJ/mol and the pre-exponential factor is 1025.19s-1.