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Identification of octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine (HMX) pyrolysis products by simultaneous thermogravimetric modulated beam mass spectrometry and time‐of‐flight velocity‐spectra measurements
Author(s) -
Behrens Richard
Publication year - 1990
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550220204
Subject(s) - chemistry , mass spectrometry , pyrolysis , mass spectrum , fragmentation (computing) , analytical chemistry (journal) , decomposition , electron ionization , ion , time of flight , time of flight mass spectrometry , isothermal process , organic chemistry , chromatography , thermodynamics , ionization , physics , computer science , operating system
The pyrolysis products formed during the isothermal decomposition of HMX at 211°C are H 2 O, HCN, CO, CH 2 O, NO, N 2 O, methylformamide, C 2 H 6 N 2 O, octahydro‐1‐nitroso‐3,5,7‐trinitro‐1,3,5,7‐tetrazocine, and a nonvolatile residue. The temporal behaviors of these products during the decomposition are presented. The method for using time‐of‐flight (TOF) velocity spectra to assist mass‐spectrometry measurements in identifying the different gaseous products formed from the pyrolysis of a material by determining the approximate molecular weights of the different gaseous products contributing to the different m/z values in the mass spectrum of the mixture is described. The ion fragmentation of HMX as a function of electron energy shows complete fragmentation of the HMX molecular ion for electron energies ≥ 12.4 eV. No fragments from the pyrolysis of HMX other than those mentioned above are observed.