A Study of the Decomposition Mechanism of Ammonium Perchlorate
Final rept. 22 Feb 1964-30 May 1965
AUBURN UNIV AL
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Using differential thermal analysis technique peak temperatures for the crystal transformation and chemical decomposition of ammonium perchlorate of various particle sizes have been determined at heating rates of approximately 2, 4 and 10 deg Cminute. It was found that peak temperatures varied with the heating rate and such variation permitted the calculation of activation energies for the particular changes occurring at the respective peak temperatures. The influence of the nature and pressure of the atmosphere over the ammonium perchlorate during heating was investigated. Various materials function as catalysts on the decomposition of ammonium perchlorate and activation energies were measured with various additives present. The conclusion was reached that the lowering of peak temperature for the decomposition exotherm by the catalyst was a better criterion of its effectiveness than the change in activation energy. An attempt was made to account for the mechanism of catalyst operation in order to explain the observed trends.
- Inorganic Chemistry