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Synthesis, characterization and catalytic activity of CdO nanocrystals

机译:CdO纳米晶体的合成,表征和催化活性

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In this paper, we report the synthesis of nanocrystalline cadmium oxide (CdO) and its characterization by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Its catalytic activity was investigated on the thermal decomposition of 1,2,5,7-tetranitro-1,3>5,7-tetraazacyclooctane (HMX), ammonium perchlorate (AP), hydroxyl terminated polybutadiene(HTPB) and composite solid propellants (CSPs) using thermogravimetric analysis (TG), simultaneous thermogravimerty and differential scanning calorimetry (TG-DSC) and ignition delay measurements. Kinetics of thermal decomposition of AP+CdO has also been investigated using model free (isoconversional) and model-fitting approaches which have been applied to data for isothermal TG decomposition. All these studies show enhancement in the rate of decomposition of AP, HTPB and CSPs but no effect on HMX. The burning rate of CSPs has also been found to be increased with CdO nanocrystals.
机译:在本文中,我们报告了纳米晶氧化镉(CdO)的合成及其通过X射线衍射(XRD)和透射电子显微镜(TEM)的表征。研究了1,2,5,7-四硝基-1,3> 5,7-四氮杂环辛烷(HMX),高氯酸铵(AP),羟基封端的聚丁二烯(HTPB)和复合固体推进剂的热分解催化活性( (CSP)使用热重分析(TG),同时进行热重和差示扫描量热法(TG-DSC)以及点火延迟测量。还使用无模型(等转化)和模型拟合方法研究了AP + CdO的热分解动力学,这些方法已应用于等温TG分解的数据。所有这些研究表明,AP,HTPB和CSP的分解速率提高了,但对HMX没有影响。还发现CdO纳米晶体可提高CSP的燃烧速率。

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