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采用化学沉积方法,制备了纳米尺度CoB和SiO2负载的CoB/SiO2催化剂。通过热重-差热分析(TG-DTA)实验,研究了催化剂在AP热分解过程中的催化性能。结果表明,CoB和CoB/SiO2对AP热分解均表现出催化活性,CoB/SiO2的活性更强;质量分数5%的CoB/SiO2,可将AP高温热分解峰的峰温降低166.2℃;CoB/SiO2较好的催化效果,归因于其相对CoB更高的热力学稳定性;负载型催化剂的较高热力学稳定性,更有利于其催化活性的履行。
Nanostructured CoB and SiO2 supported CoB / SiO2 catalysts were prepared by chemical deposition. The thermogravimetry-differential thermal analysis (TG-DTA) experiments were carried out to study the catalytic performance of the catalysts during the thermal decomposition of AP. The results showed that both CoB and CoB / SiO2 exhibited catalytic activity on the thermal decomposition of AP, and the activity of CoB / SiO2 was stronger. CoB / SiO2 with mass fraction of 5% reduced the peak temperature of high temperature pyrolysis peak of AP to 166.2 ℃. CoB / SiO2 better catalytic effect, due to its higher relative CoB thermodynamic stability; supported catalyst higher thermodynamic stability, more conducive to the performance of its catalytic activity.