Numerical simulations of the heating with constant rate of a PBX plastic-bonded explosive 9501 formulation consisting of the energetic crystal HMX embedded in a polymeric binder inside of a rigid cylinder is performed. The continuum thermo-mechanochemical model of the behavior of a PBX 9501 developed in the preceding paper V. I. Levitas, B. F. Henson, L. B. Smilowitz, D. K. Zerkle, and B. W. As...

Surface oxygen of oxide catalyst has low coordination number; they are negatively charged. can act active site for decomposition energetic nitramines (i.e. HMX). Additionally hydrous surface release OH radicals. Colloidal particles fulfil these requirements. Furthermore induce thermite reaction with aluminium particles. This study reports on the facile fabrication colloidal ferric 5 nm average ...

Three species of the family Enterobacteriaceae that biochemically reduced hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) were isolated from nitramine explosive-contaminated soil. Two isolates, identified as Morganella morganii and Providencia rettgeri, completely transformed both RDX and the nitroso-RDX reduction intermediates. The third...

In order to achieve a clean synthesis process of HMX,nitrolysis of DPT in two nitration systems was investigated.Nitrolysis of DPT in N2O5/organic solvent systems was investigatedto yield little HMX but mainly complex by-products with lowmelting point, indicating that the solutions of N2O5 in organicsolvents was not suitable for this process. Nitrolysis in N2O5/HNO3syste...

To improve the mechanistic understanding of the possible decomposition in the gas phase of the energetic material HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine), we used ab initio calculations to determine the various unimolecular decomposition channels. We find three distinct mechanisms: (i) homolytic cleavage of N-N bond to form NO2 (M ) 46) and HMR (M ) 250) which subsequently decomp...

Ultraviolet excitation (8-ns duration) is employed to study the decomposition of RDX (1,3,5-trinitro-1,3,5-triazacyclohexane) and HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane) from their first excited electronic states. Isolated RDX and HMX are generated in the gas phase utilizing a combination of matrix-assisted laser desorption and supersonic jet expansion techniques. The NO molecule is...