The thermal decompositions of two kinds of NH4ClO4 (AP) with different grain size were investigated by DTA and TC-FTIR coupling. It is proposed that the decomposition of AP crystal obeys the process of “topochemistry ” and it is explained that there are two steps in the decomposition of the coarse grain size. On the basis of the gaseous products identified by real-time and rapid-scan FTIR and reported results in the literatures, the different mechanisms of the two steps during AP decomposition process are suggested.
LIU Zi-ru, YIN Cui-mei, KONG Yang-hui, et al. The Thermal Decomposition of Ammonium Perchlorate[J]. Chinese Journal of Energetic Materials,2000,8(2):75-79.