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含能材料  2015 

纳米β-Cu的制备及其对超细AP的催化性能

DOI: 10.11943/j.issn.1006-9941.2015.10.006

Keywords: 纳米2,4-二羟基苯甲酸铜(β-Cu) 高氯酸铵(AP) 热分解 催化

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Abstract:

采用湿法机械研磨法制备了纳米2, 4-二羟基苯甲酸铜(β-Cu)。通过X射线粉末衍射仪(XRD)、场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)表征了β-Cu颗粒的结构、粒径及形貌。同时, 研究了纳米β-Cu对高氯酸铵(AP)的催化性能。结果表明, β-Cu颗粒粒径约为100 nm, 呈类球形。DSC分析表明, 纳米β-Cu对6 μm和1 μm超细AP具有显著的催化作用, 可使二者的高温分解峰温分别降低至373.1 ℃和351.2 ℃; 表观分解热分别增加至1529 J·g-1和1513 J·g-1; 反应速率常数分别提高近10倍。相比6 μm AP, 纳米β-Cu对1 μm AP具有更好的催化效果, 使其高温分解峰温更低, 反应速率常数更大

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