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首页> 外文期刊>RSC Advances >Thermal decomposition mechanism of Co-ANPyO/CNTs nanocomposites and their application to the thermal decomposition of ammonium perchlorate
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Thermal decomposition mechanism of Co-ANPyO/CNTs nanocomposites and their application to the thermal decomposition of ammonium perchlorate

机译：Co-Anpyo / CNT纳米复合材料的热分解机理及其在高氯酸铵热分解中的应用

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摘要

A chemical precipitation method was used to prepare cobalt complexes of 2,6-diamino-3,5-dinitropyridine-1-oxide/carbon nanotube (Co-ANPyO/CNTs) nanocomposites. The structure and thermal analyses indicate that Co-ANPyO nanoparticles are well dispersed on the surface of CNTs with an average particle size of about 10 nm, the content of Co-ANPyO nanoparticles in nanocomposites is about 73.4 wt%. The thermal decomposition mechanism of Co-ANPyO and Co-ANPyO/CNTs nanocomposites were predicted based on thermogravimetry-differential scanning calorimetry (TG-DSC) and thermolysis in situ rapid-scan FTIR (RSFTIR) results. The thermal decomposition of Co-ANPyO and Co-ANPyO/CNTs nanocomposites contains two exothermic processes in the temperature range of 25-490 degrees C. The first exothermic process for Co-ANPyO/CNTs nanocomposites shifts towards lower temperatures compared to that of Co-ANPyO. The main products of the final residues for Co-ANPyO and Co-ANPyO/CNTs nanocomposites at 490 degrees C are Co3O4 and CoO, respectively. The catalytic performance of Co-ANPyO and Co-ANPyO/CNTs nanocomposites on thermal decomposition of ammonium perchlorate (AP) was investigated by TG-derivative thermogravimetry (DTG), DSC, non-isothermal kinetic and alpha-T kinetic curves analyses. The possible catalytic mechanism was also discussed and proposed. During the thermal decomposition process of AP with Co-ANPyO/CNTs nanocomposites, Co-ANPyO/CNTs nanocomposites might decompose and form Co3O4/CNTs and CoO/CNTs nanocomposites as high activity catalysts, which could accelerate the thermal decomposition of AP. Thus, Co-ANPyO/CNTs nanocomposites not only lower the decomposition temperature and activation energy, but also enhance the total heat of AP, which could not be achieved by the CNTs and Co-ANPyO alone. The way of preparing Co-ANPyO/CNTs nanocomposites presented in this work can be expanded to other energetic additives/CNTs nanocomposites used for AP and AP based propellants.
机译：化学沉淀法用于制备2,6-二氨基-3,5-二硝基吡啶-1-氧化物/碳纳米管（CO-ANPYO / CNT）纳米复合材料的钴络合物。该结构和热分析表明，共荷荷纳米粒子很好地分散在CNT的表面上，平均粒径为约10nm，纳米复合材料中的共同纳米粒子的含量约为73.4wt％。基于热重差分扫描量热法（TG-DSC）和原位的热解来预测Co-Anpyo和Co-Anpyo / CNT纳米复合材料的热分解机理，以及原位快速扫描FTIR（RSFTIR）结果。 Co-Anpyo和Co-Anpyo / CNT纳米复合材料的热分解在25-490℃的温度范围内含有两个放热过程。与CO-相比，共复合材料的第一次放热过程变为较低的温度anpyo。 490℃的Co-Anpyo和Co-Anpyo / CNT纳米复合材料的最终残基的主要产物分别为CO3O4和COO。通过TG衍生物热重分析（DTG），DSC，非等温动力学和α-T动力学曲线分析研究了CO-ANPYO和CO-ANPYO / CNT纳米复合材料对高氯酸铵（AP）的热分解的催化性能。还讨论并提出了可能的催化机制。在AP的热分解过程中，在具有CO-ANPYO / CNT纳米复合材料期间，CO-ANPYO / CNT纳米复合材料可以分解并形成CO3O4 / CNT和COO / CNT纳米复合材料作为高活性催化剂，其可以加速AP的热分解。因此，CO-ANPYO / CNT纳米复合材料不仅降低了分解温度和激活能量，而且还增强了AP的总热量，其不能单独通过CNT和CO-ANPYO实现。在该工作中提出的制备共同荷纳/ CNT纳米复合材料的方法可以扩展到用于AP和AP基于AP的其他能量添加剂/ CNT纳米复合材料。

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  • 来源
    《RSC Advances》 |2015年第62期|共11页
  • 作者

    Cheng Jian; Zhang Rongxian; Liu Zuliang; Li Lixia; Zhao Fengqi; Xu Siyu;

  • 作者单位

    Jiangsu Univ Sch Environm &

    Safety Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Jiangsu Univ Sch Environm &

    Safety Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Xian Modern Chem Res Inst Xian 710065 Shanxi Peoples R China;

    Xian Modern Chem Res Inst Xian 710065 Shanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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