摘要
用差热分析法研究了纳米金属粉对高氯酸铵 (AP)热分解的影响。结果表明 ,质量分数为 5 %的纳米铜粉、镍粉和铝粉可以使AP的高温分解温度分别降低 130 2、112 9和 5 1 8℃ ,显示出对AP高温分解反应很好的催化活性 ,并使表观分解热明显增大。纳米铜粉可使AP的低温分解温度降低 35 1℃ ;而纳米镍粉和铝粉却使AP的低温分解温度有所上升 ,表现出对AP低温分解反应具有一定的阻碍作用。研究表明 ,微米级金属粉对AP高温分解反应的催化作用明显小于纳米金属粉 ,但微米级金属粉均可降低AP的低温分解温度。增加纳米金属粉的含量可以增强对AP的高温分解反应催化作用 。
The decomposition of ammonium perchlorate(AP) in the presence of nanometer metal powders has been investigated by DTA. The results show that nanometer Cu, Ni and Al powders clearly decreased the high decomposition temperature of AP by 130.2, 112.9 and 51.8 ℃ respectively, as compared with that of AP without metal powder, showing good catalytic effects on the higher temperature decomposition of AP. Nanometer Cu powder also obviously decrases the low decomposition temperature of AP by 35.1 ℃, whereas the nanometer Ni and Al powders increased it. The catalytic effects of micron metal powders on the high temperature decomposition of AP are less than that of nanometer metal powders, but all the micron metal powders decrease the low decomposition temperature of AP.
出处
《应用化学》
CAS
CSCD
北大核心
2004年第5期488-492,共5页
Chinese Journal of Applied Chemistry
关键词
纳米金属粉
高氯酸铵
热分解
催化性能
nanometer metal powder,ammonium perchlorate,catalysis,thermal decomposition
