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《Chinese Journal of Inorganic Chemistry》 2005-10
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Effect of Nanometer Cu Powder on Thermal Decomposition of Ammonium Perchlorate

LIU Lei-Li1 LI Feng-Sheng,2 YANG Yi2 TAN Ling-Hua2 ZHANG Qing-Si1(1College of chemical engineering, Shandong institute of light industry, Jinan 250100)(2National Special Superfine Powder Engineering research Center, Nanjing University of Science & Technology,Nanjing 210094)  
The decomposition behaviour of ammonium perchlorate (AP) has been investigated in the presence of Cu nanopowder by DTA. The results show that nanometer Cu powder decreased the first and second thermal decomposition temperature of AP by 35.1 ℃ and 130.2 ℃, respectively, and the DTA heat release of AP in the presence of Cu nanopowders increased to 1.20 kJ·g-1, showing good catalytic effect on the thermal decomposition of AP. The catalytic effect of Cu micron-size powder on the thermal decomposition of AP was less than that of Cu nanopowder. With the increase in content, Cu nanopowder enhanced its catalytic effect on the high temperature decomposition of AP, however, it weakened its catalytic effect on the low temperature decomposition of AP. The mechanism of catalysis for the thermal decomposition of AP is as follows: (1) metal oxider acts as the intermedium in the process of election tranfer, (2) Cu nanopowder reacts with the decomposed product of AP, (3) Cu nanopowder has special surface effect.
【Fund】: 国家自然科学基金青年基金资助项目(No.50306008)
【CateGory Index】: V512;
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