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Thermal decomposition of 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX): Kinetics of nitroso intermediates formation

✍ Scribed by John C. Hoffsommer; Donald J. Glover

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
525 KB
Volume
59
Category
Article
ISSN
0010-2180

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✦ Synopsis

The kinetics of the thermal decomposition of RDX and the formation of three nitroso intermediates have been studied in hexaproteo (h6) benzene; hexadeutero (d6) benzene at 180"C and 200"C; and, as a melt at 210°C in sealed capillaries. Decomposition rates were determined by vapor-phase chromatographic analysis of the residues with time for unreacted RDX and the nitroso intermediates formed. RDX exhibited first order decomposition kinetics in benzene solutions, but showed zero order kinetics in the melt at 210°C. A kinetic isotope effect was observed in d6-benzene, and together with the nitroso intermediates formation, indic~ted:the following consecutive concurrent sequence as one decomposition pathway: Re3 --' Re2 --' Re --' R -" products, where Re3 is RDX; and Re2, Re, and R are the l-nitroso-3,5-dinitro-, 1,3-dinitroso-5-nitro-, alld the 1,3,5-trinitroso-1,3,5-triazacyclohexanes, respectively. Rate constants obtained for the decomposition of Re3 and Re2 are discussed in terms of the nitroso intermediates formed.

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