摘要
通过液相合成法,利用油酸作为形貌导向剂,通过控制油酸的用量,制备出不同形貌的Cu_2O催化剂。其中,外露面为{110}的十二面体Cu_2O单晶,对高氯酸铵(AP)的低温分解的催化效果最佳,使AP的低温分解温度降低约61℃,使其分解峰值温度降到269℃。此外,当十二面体Cu_2O单晶的添加量由2%增加到5%时,AP的低温阶段分解的质量分数由25.1%增加至98.1%。
Cu_2O particles were successfully fabricated by a facile hydrothermal method, and its shape of the particles depends on the amount of morphology inducing agent, i.e. oleic acid. Cu_2 O with various morphology effectively promotes the pyrolysis of ammonium perchlorate(AP), and the dodecahedral Cu_2 O with exposed {110} plane presents the best catalytic effect on the low temperature decomposition of AP. The dodecahedral Cu_2 O substantially decreases the temperature of first-stage decomposition of AP to 269 ℃. Furthermore, the decomposed mass fraction of AP in low temperature stage increased markedly from 25.1% to 98.1% as the additive amount of dodecahedral Cu_2 O increased from 2% to 5%.
引文
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