纳米Fe2O3的制备及其对AP热分解的催化作用

推进技术 ›› 2006, Vol. 27 ›› Issue (4): 381-384.

• • 上一篇

纳米Fe₂O₃的制备及其对AP热分解的催化作用

刘建勋,李凤生,陈爱四,杨永林,马振叶

南京理工大学国家特种超细粉体工程技术研究中心江苏南京210094;南京理工大学国家特种超细粉体工程技术研究中心江苏南京210094;南京理工大学国家特种超细粉体工程技术研究中心江苏南京210094;南京理工大学国家特种超细粉体工程技术研究中心江苏南京210094;南京理工大学国家特种超细粉体工程技术研究中心江苏南京210094

发布日期:2021-08-15
基金资助:
中国人民解放军总装备部预研项目(41328030507)

Preparation of Fe₂O₃ nanoparticles and its catalytic effect on thermal decomposition of ammonium perchlorate（AP）

National Special Superfine Powder Engineering and Technology Center,Nanjing Univ.of Science and Technology,Nanjing 210094,China;National Special Superfine Powder Engineering and Technology Center,Nanjing Univ.of Science and Technology,Nanjing 210094,China;National Special Superfine Powder Engineering and Technology Center,Nanjing Univ.of Science and Technology,Nanjing 210094,China;National Special Superfine Powder Engineering and Technology Center,Nanjing Univ.of Science and Technology,Nanjing 210094,China;National Special Superfine Powder Engineering and Technology Center,Nanjing Univ.of Science and Technology,Nanjing 210094,China

Published:2021-08-15

摘要/Abstract

摘要： 采用溶胶-凝胶法、水热法及强迫水解法,制备了球形、立方形、纺缍形及针形四种不同形貌的纳米Fe2O3粒子。通过透射电子显微镜(TEM)、X衍射(XRD)、比表面积(BET)对纳米粒子的粒径、形貌、结构、比表面积进行了表征,用差示扫描量热仪(DSC)研究了Fe2O3对高氯酸铵(AP)热分解的催化性能。结果表明:纳米Fe2O3对AP的高温热分解催化作用较微米的效果好。不同形貌的纳米Fe2O3粒子有着各自不同的比表面积,比表面积较大的纳米纺缍形和针形Fe2O3较比表面积较小的纳米立方形和球形的催化效果好。比表面积最大的纳米针形Fe2O3使AP的高温热分解峰温度降低了67.3℃,表观分解放热提高了785 J.g-1,表现出较好的催化性能。

关键词: 纳米催化剂~+;制备;固体推进剂;催化;热分解

Abstract: Iron oxide nanoparticles with four different morphologies such as spherical,cubic,spindle,acicular shape were prepared by the methods of sol-gel,hydrothermal reaction and forced hydrolysis respectively.The diameter,morphology,structure,and specific surface area of nanoparticles were indicated by TEM,XRD and BET.Meanwhile,the catalytic properties of Fe₂O₃ nanoparticles on the thermal decomposition of ammonium perchlorate（AP） were investigated by DSC.The results indicated that the catalytic properties of Fe₂O₃ nanopaticles were better than those of the microparticles.Iron oxide nanoparticles with different shapes showed different specific surface areas.The spindle and acicular shape Fe₂O₃ nanoparticles have bigger specific surface area,so they have better catalytic effect than those of the cubic and spherical shape ones.The acicular shape Fe₂O₃ nanoparticles with maximum specific surface area could decrease the higher thermal decomposition temperature of AP by 67.3℃,and increase the exothermic heat by 785 J·g^-1,showing good catalytic effect.

Key words: Nanocatalyst~+;Preparation;solid propellant;catalysis;Thermal decompostion

刘建勋,李凤生,陈爱四,杨永林,马振叶. 纳米Fe₂O₃的制备及其对AP热分解的催化作用[J]. 推进技术, 2006, 27(4): 381-384.

纳米Fe₂O₃的制备及其对AP热分解的催化作用

Preparation of Fe₂O₃ nanoparticles and its catalytic effect on thermal decomposition of ammonium perchlorate（AP）

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