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Published on: August 5, 2016
Decomposition mechanism of 1,3,5-trinitro-2,4,6-trinitroaminobenzene under thermal and shock stimuli using ReaxFF
Jun Jiang1, Hao-Ran Wang1, Feng-Qi Zhao2
1Key Laboratory of Soft Chemistry and Functional Materials of MOE, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China. xhju@njust.edu.cn.
Abstract:
To obtain atomic-level insights into the decomposition behavior of 1,3,5-trinitro-2,4,6-trinitroaminobenzene (TNTNB) under different stimulations, this study applied reactive molecular dynamics simulations to illustrate the effects of thermal and shock stimuli on the TNTNB crystal. The results show that the initial decomposition of the TNTNB crystal under both thermal and shock stimuli starts with the breakage of the N-NO2 bond. However, the C6 ring in TNTNB undergoes structural rearrangement to form a C3-C5 bicyclic structure at a constant high temperature. Then, the C3 and C5 rings break in turn. The main final products of TNTNB under shock are N2, CO2, and H2O, while NO, N2, H2O and CO are formed instead at 1 atm under a constant high temperature. Pressure is the main reason for this difference. High pressure promotes the complete oxidation of the reactants.
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