Abstract: Nanometer sized lanthanum oxide was synthesized at room temperature by humid solid state reaction The particles were characterized by scanning electron microscope and X ray diffraction The effect of nanometer sized lanthanum oxide on catalyzing thermal decomposition reaction of Cyclotrimethylenetriamine(RDX) was studied by DSC The experimental results show that nanometer sized lanthanum oxide can catalyze the decomposition reaction of RDX effectively The mechanism of this catalytic reaction was proposed

Key words: Nitramine propellant;Nanometer;Lanthanum oxide;Combustion catalyst;Hexogen;Thermal decomposition

摘要： 用室温湿固相反应制备了纳米氧化镧 ,并进行了表征。用DSC研究了纳米氧化镧对环三次甲基三硝胺 (黑索今 ,RDX)热分解反应的催化作用 ,并提出了该催化反应机理。实验结果表明 ,纳米氧化镧能有效地催化RDX的热分解 ,使RDX的二次分解肩峰消失 ,使RDX分解放热峰的后半峰变得陡直 ,并极大地增大了RDX的表观分解热

关键词: 胺胺推进剂;纳米氧化镧;燃烧催化剂;黑索今;热分解