Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Experimental Investigation of the Thermal Decomposition Pathways and Kinetics of TATB by Isotopic Substitution

Journal Article · · Propellants, Explosives, Pyrotechnics
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); M.H. Chew and Associates, Livermore, CA (United States)
Real-time measurements of the product gases arising from the thermal decomposition of triamino-trinitro benzene (TATB), its deuterated analogue, and plastically bonded TATB (LX-17) are presented in this study. Gas-phase decomposition products are identified by IR absorption spectroscopy. The frequency shifts in rovibrational spectra due to isotopic substitution and the change in rate of formation of decomposition products due to the kinetic-isotope-effect (KIE) help elucidate the decomposition pathways. The formation of H2O precedes other molecules (e.g., HCN, HNCO) during decomposition. After the concentrations of HCN and HNCO molecules reach a peak, their amounts gradually decrease. The concentrations of the other decomposition products (e.g., NH3 and CO2) rapidly rise after an induction period, which is attributed to the presence of autocatalytic reactions. The trends of chemical evolution are similar for all the samples, but their kinetic behaviors are different. This indicates the rates of consistent pathways are changed during thermal decomposition. Additionally, the kinetics of deuterated TATB decomposition is slower than that of unsubstituted TATB due to the KIE (kH/kD~1.41). The rate of LX-17 decomposition is slightly lower than unsubstituted TATB (kTATB/kLX-17~1.15). The KIE is more pronounced during the early stage of decomposition, which is attributed to the first steps of TATB decomposition involving water formation (i.e., H vs D transfer). The KIE slows down the formation of all gases, including those lacking hydrogen (e.g., CO2). These results suggest the TATB thermal decomposition mechanism might involve a series of pathways rather than a set of independent and parallel reactions.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1818412
Report Number(s):
LLNL-JRNL--820018; 1030501
Journal Information:
Propellants, Explosives, Pyrotechnics, Journal Name: Propellants, Explosives, Pyrotechnics Journal Issue: 9 Vol. 46; ISSN 0721-3115
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Preheating Sensitization of a TATB Composition Part one: Chemical Evolution journal October 2004
Spectroscopic and thermal studies on the decomposition of l,3,5-triamino-2,4,6-trinitrobenzene (TATB) journal January 1996
XPS study of UV and shock decomposed triamino-trinitrobenzene journal February 1979
Thermal decomposition of 1,3,5-triamino-2,4,6-trinitrobenzene journal January 1981
Infrared spectra and isomerization of CHNO species in rare gas matrices journal April 1982
Inversion doubling in the ν2 vibration-rotation band of NH2D and ND2H journal November 1986
Rotational analysis of the ν2 band of NH2D journal November 1986
Inversion-rotation interaction in NH2D: Intensity perturbations in the ν2 band journal December 1987
Measurement and interpretation of the absolute infrared intensities of NH3 and ND3 journal January 1983
Application of scanning calorimetry to the study of chemical kinetics journal March 1970
Thermochemistry of explosives journal February 1975
Kinetic-isotope effects in thermal explosions journal December 1982
An enthalpic study of the thermal decomposition of unconfined triaminotrinitrobenzene journal February 1983
A study of the thermal decomposition of confined triaminotrinitrobenzene. The gaseous products and kinetics of evolution journal February 1983
The infra-red absorption spectrum of DNCO journal July 1966
High-resolution spectra of the ν2 and 2ν2 bands of HCN and DCN journal April 1973
Vibrational spectrum of 1,3,5-triamino-2,4,6-trinitrobenzene journal January 1983
Infrared spectrum of solid isocyanic acid (HNCO): vibrational assignments and integrated band intensities journal January 2002
Thermal decomposition and kinetics of plastic bonded explosives based on mixture of HMX and TATB with polymer matrices journal February 2017
The NH and ND stretching fundamentals of 14NH2D journal June 2006
The HITRAN2012 molecular spectroscopic database journal November 2013
Kinetics of thermal degradation of explosive binders Viton A, Estane, and Kel-F journal February 2005
Measurement of moisture outgassing of the plastic-bonded TATB explosive LX-17 journal October 2012
Effect of pressure on TATB and LX-17 thermal decomposition journal May 2021
Sigmoidal Nucleation and Growth Curves Across Nature Fit by the Finke–Watzky Model of Slow Continuous Nucleation and Autocatalytic Growth: Explicit Formulas for the Lag and Growth Times Plus Other Key Insights journal February 2017
Silver Nanoparticles Synthesized by Microwave Heating: A Kinetic and Mechanistic Re-Analysis and Re-Interpretation journal December 2017
Hydrogen/Deuterium (H/D) Exchange Catalysis in Alkanes journal January 2018
Kinetics and mechanisms of thermal decomposition of nitroaromatic explosives journal December 1993
Thermal decomposition of energetic materials. 61. Perfidy in the amino-2,4,6-trinitrobenzene series of explosives journal August 1993
Correlation of impact sensitivity with electronic levels and structure of molecules journal February 1991
X-ray photoelectron study of electronic structure, ultraviolet, and isothermal decomposition of 1,3,5-triamino-2,4,6-trinitrobenzene journal April 1982
The physical and chemical nature of sensitization centers left from hot spots caused in triaminotrinitrobenzene by shock or impact journal September 1987
Ring Closure Mediated by Intramolecular Hydrogen Transfer in the Decomposition of a Push−Pull Nitroaromatic:  TATB journal July 2000
Ultrafast Shock Compression and Shock-Induced Decomposition of 1,3,5-Triamino-2,4,6-trinitrobenzene Subjected to a Subnanosecond-Duration Shock: An Analysis of Decomposition Products journal May 2012
Moisture Desorption Rates from TATB Formulations: Experiments and Kinetic Models journal May 2012
Nanosecond Time-Resolved and Steady-State Infrared Studies of Photoinduced Decomposition of TATB at Ambient and Elevated Pressure journal April 2009
Mechanism of the Gas-Phase HO + H 2 O → H 2 O + OH Reaction and Several Associated Isotope Exchange Reactions:  A Canonical Variational Transition State Theory Plus Multidimensional Tunneling Calculation journal February 1999
Vibration Spectra of 1,3,5‐Triamino‐2,4,6‐trinitrobenzene journal May 1971
Low‐Temperature Infrared Study of Intermediates in the Photolysis of HNCO and DNCO journal May 1964
Infrared Spectra of Hydrogen Cyanide and Deuterium Cyanide journal August 1956
Shock induced sub-detonation chemical reactions in 1,3,5-triamino-2,4,6-trinitrobenzene
  • Östmark, Henric
  • Proceedings of the conference of the American Physical Society topical group on shock compression of condensed matter, AIP Conference Proceedings https://doi.org/10.1063/1.50841
conference January 1996
Characterization of solid residue formation in LX-17 exposed to abnormal thermal environments
  • Kahl, Evan M.; Muetterties, Nicholas K.; Nelson, A. J.
  • SHOCK COMPRESSION OF CONDENSED MATTER - 2019: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings https://doi.org/10.1063/12.0000948
conference January 2020
Gas-Grain Modeling of Isocyanic acid (Hnco), Cyanic acid (Hocn), Fulminic acid (Hcno), and Isofulminic acid (Honc) in Assorted Interstellar Environments journal December 2010
The Infrared Absorption Spectra of the Linear Molecules Carbonyl Sulphide and Deuterium Cyanide journal September 1935
Influence of metals on the thermal decomposition of s-triaminotrinitrobenzene (TATB) report July 1977
The insensitive high explosive triaminotrinitrobenzene (TATB): Development and characterization, 1888 to 1994 report August 1995

Similar Records

A Literature Review of Shock Sensitivity Changes of TATB Due to Thermal Cycling
Technical Report · Fri Jul 15 00:00:00 EDT 2016 · OSTI ID:1304794

Effect of pressure on TATB and LX-17 thermal decomposition
Journal Article · Thu Feb 18 19:00:00 EST 2021 · Thermochimica Acta · OSTI ID:1787799

LX-17 Thermal Decomposition-Characterization of Solid Residues from Cook-Off in a Small-Scale Vessel Under Confinement
Journal Article · Mon May 03 20:00:00 EDT 2021 · Propellants, Explosives, Pyrotechnics · OSTI ID:1819020