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IGNITION AND COMBUSTION CHARACTERISTICS OF NANOSCALE AI/AglO_3: A POTENTIAL ENERGETIC BIOCIDAL SYSTEM

机译:纳米AI / AglO_3的点火和燃烧特性:潜在的能量生物杀灭系统

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摘要

The authors investigated the ignition and reaction of All AgIO_3 thermites for potential use in biocidal applications. Rapid-heating wire experiments were performed to measure the ignition temperature and investigate the thermal decomposition of the oxidizer using a T-Jumpl TOF Mass Spectrometer and an optical emission setup. Combustion experiments inside a constant-volume pressure cell were also carried out, and the relative performance was compared with other thermite systems. The ignition temperature in air at atmospheric pressure was found to be 1215 ± 40 K. The AgIO_3 was found to significantly outperform CuO and Fe_2O_3 oxidizers in pressurization tests, and this is attributed to the enhanced gas release as the AgIO_3 thermally decomposes to release iodine in addition to oxygen. The reacted product was collected to investigate the final state of the products. Transmission electron microscopy and X-ray diffraction were performed to show that the major Ag product species was AgI, and not elemental Ag and I_2. The AgI was found to be surface exposed to the environment, existing primarily as agglomerated spherical nanoparticles, and was found in some cases to coat the Al_2O_3 after the reaction.
机译:作者研究了所有AgIO_3铝酸盐的点燃和反应,它们可能在杀生物应用中使用。使用T-Jumpl TOF质谱仪和光发射装置进行了快速加热丝实验,以测量着火温度并研究氧化剂的热分解。还进行了恒压压力室内的燃烧实验,并将其相对性能与其他铝热系统进行了比较。发现大气压下空气中的着火温度为1215±40K。在加压测试中,发现AgIO_3的性能明显优于CuO和Fe_2O_3氧化剂,这归因于AgIO_3热分解释放出碘的过程中气体的释放增加。除了氧气。收集反应的产物以研究产物的最终状态。透射电子显微镜和X射线衍射表明,主要的Ag产物种类是AgI,而不是元素Ag和I_2。发现AgI表面暴露于环境中,主要以团聚的球形纳米颗粒形式存在,并且在某些情况下发现在反应后覆盖Al_2O_3。

著录项

  • 来源
    《Combustion Science and Technology》 |2011年第3期|p.285-302|共18页
  • 作者单位

    Department of Mechanical Engineering. University of Maryland,College Park, MD, USA;

    Department of Mechanical Engineering. University of Maryland,College Park, MD, USA;

    Department of Mechanical Engineering. University of Maryland,College Park, MD, USA;

    Department of Mechanical Engineering. University of Maryland,College Park, MD, USA;

    Department of Mechanical Engineering. University of Maryland,College Park, MD, USA,Department of Chemistry and Biochemistry, University of Maryland,College Park, MD, USA;

    Chemistry and Materials Division, Naval Air Warfare Center,China Lake, CA, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biocide; combustion; ignition; nanothermite; silver iodate; thermite;

    机译:杀菌剂燃烧;点火;纳米铁矿碘酸银铝热剂;

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