| 光谱学与光谱分析 |
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| An Investigation on Fast Thermolysis of Ammonium Perchlorate (AP) by FTIR Spectroscopy |
| ZHANG La-ying, LIU Zi-ru, WANG Xiao-hong, HENG Shu-yun, PAN Qing, SHAO Ying-hui, ZHANG Gao, ZHAO Feng-qi |
| National Defense Key Laboratory of Propellant and Explosive Combustion, Xi’an Modern Chemistry Research Institute, Xi’an 710065, China |
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Abstract The fast thermolysis processes of ammonium perchlorate (AP) and its chemical reaction mechanism under certain simulated conditions of combustion were systematically studied by means of T-Jump/FTIR technique. AP was flash-pyrolyzed under different pressure nitrogen atmosphere, with the heating rate of 1 000 K·s-1 and the set temperatures of 874 and 1 274 K. Thereafter, the real time species and concentration of its gaseous products were obtained and identified by using rapid scanning Fourier transform infrared (FTIR) in-situ spectroscopy. It was indicated that the main gaseous products of AP thermolysis is composed of NO2, N2O, NO, HCl and NClO. Interestingly, the values of N2O/NO2, NO/NO2 and NO/NClO are increased while the test temperature or pressure is elevated. It is suggested that the transformation of condensed phase and heterogeneous gas/condensed phase was probably arises and the “following reactions” among the main gaseous products may also take place in the fast thermolysis process of AP.
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Received: 2009-09-06
Accepted: 2009-12-08
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Corresponding Authors:
ZHANG La-ying
E-mail: zhang.laying@163.com; 11988613@qq.com
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