Competitive vaporization and decomposition of liquid RDX
Update Item Information
Publication Type abstract
School or College College of Science
Department Chemistry
Creator Wight, Charles Albert
Other Author Long, Gregory T.; Vyazovkin, Sergey; Brems, Brittany A.
Title Competitive vaporization and decomposition of liquid RDX
Date 2000
Description The thermal decomposition of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) has been studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Activation energies as a function of the extent of conversion, ?, have been determined by model-free isoconversional analysis of these data. In open pans, evaporation is a prevalent process with an activation energy of 100 kJ mol-1. Confining the system in either a pierced pan or a closed pan promotes liquid state decomposition of RDX that occurs with an activation energy of 200 kJ mol-1, which suggests scission of an N?N bond as the primary decomposition step. In such a confined environment, gas phase decomposition is a competing channel with an activation energy estimated to be 140 kJ mol-1. In a closed pan, RDX generates a heat release of 500 kJ mol-1 that is independent of both the heating rate, ?, and the mass.
Type Text
Publisher American Chemical Society
Volume 104
Issue 1
First Page 2570
Last Page 2574
Subject Liquid RDX; Competitive vaporization; Thermal decomposition; Differential scanning calorimetry
Subject LCSH Decomposition (Chemistry); Thermogravimetry; Calorimetry
Language eng
Bibliographic Citation Long, G. T., Vyazovkin, S., Brems, B. A., & Wight, C. A. (2000). Competitive vaporization and decomposition of liquid RDX. Journal of Physical Chemistry B, 104(11), 2570-4.
Rights Management (c)American Chemical Society
Format Medium application/pdf
Identifier ir-main,7068
ARK ark:/87278/s60g43v9
Setname ir_uspace
ID 707715
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