Perchlorates, decompositions

R. H. Waesche, "Workshop in the Relationship of Ammonium Perchlorate Decomposition to Dedagration," Proceedings of the 7th JMNNMF Combustion Meeting, Vol. 1, CPIA Pubhcation 204, CPIA, Johns Hopkins University, Laurel, Md., 1971, p. 15. 

Heath and Majer (H3) have recently used a mass spectrometer to study the decomposition of ammonium perchlorate. Decomposition was detected in the range from 110° to 120°C. At this temperature, there were ions in the mass spectrum caused by NH3, HC104, Cl2, HC1, nitrogen oxides, and 02. The appearance of the species NO, N02,02, and Cl2 in the decomposition products under very low pressure (i.e., in the absence of gas-phase molecular collisions) indicates that the principal decomposition reactions take place in the crystal and not in the gas phase. 

Varying the semiconducting properties of the catalyst crystal affects the rate of ammonium perchlorate decomposition. 

Akerman, L. A. et al., Combustion, Explos., Shockwaves, 1987, 23, 178 Calcium chloride and oxide catalyse the second, violent, stage of ammonium perchlorate decomposition and increase the shock sensitivity of mixtures with sugar. 

J.R. Ward J J. Rocchio, Effect of Neutron Radiation on the Rate of Ammonium Perchlorate Decomposition Reactions Involved in Combustion , Ibid, paper 6.4, pp 271—80 (1975) 246) Ibid, Effect of Neutron Radia-... 

Calcium chloride and oxide catalyse the second, violent, stage of ammonium perchlorate decomposition and increase the shock sensitivity of mixtures with sugar. 

Markowitz2a has discussed perchlorate decomposition in terms of the thermodynamics of the above two reactions. Since AS° for both reactions is highly positive (because gaseous products are... 

Since RbC103 is quite unstable in the decomposition range of the perchlorate, decomposition proceeds to the chloride. In addition to the decomposition reactions... 

The perchlorate decompositions are much more complex and although it is possible that (C104)2 or ClOd-may be initial products of the decomposition, there is presently no evidence to support the existence of either species in the products of the reactions. The clean nature of the fluorosulfate dismutations may in part rest on the high stability of the SOsF- radical. It is reasonable to postulate the XeF- radical as the other initial product of decomposition. If this radical occurs, it must be stable toward either dissociation into atoms or mutual annihilation, i.e. 

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