Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT

Arindrajit Chowdhury, Stefan Thynell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The thermal decomposition characteristics of the high-nitrogen energetic material triaminoguanidinium azotetrazolate (TAGzT) were probed by confined rapid thermolysis, in conjunction with rapidscan Fourier transform spectroscopy (FTIR) and time-of-flight mass spectrometry (ToFMS). Of particular interest were the reactions leading to the initiation of decomposition and the subsequent secondary reaction pathways forming copious quantities of molecular nitrogen. Sub-milligram quantities of the sample were subjected to high heating rates of approximately 2000 K/s at temperatures around 260°C in an ambient inert gas at one atm to achieve rapid thermolysis. The major reaction pathway involves proton transfers to form triaminoguanidine (TAG) and azobistetrazole (AzT). TAG decomposes readily under thermal stress through an N-NH2 bond scission to form N2H4, NH3, N2, and NH2NC. AzT decomposes via ring opening reactions to liberate dinitrogen and traces of HCN through various nitrene intermediates.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion"
PublisherCombustion Institute
Pages181-186
Number of pages6
ISBN (Electronic)9781604239454
StatePublished - Jan 1 2007
EventFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion - Charlottesville, United States
Duration: Oct 21 2007Oct 24 2007

Publication series

NameFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion"

Other

OtherFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion
CountryUnited States
CityCharlottesville
Period10/21/0710/24/07

Fingerprint

Thermolysis
Mass spectrometry
Nitrogen
mass spectroscopy
Spectroscopy
Noble Gases
Proton transfer
Inert gases
Heating rate
Thermal stress
spectroscopy
Fourier transforms
Pyrolysis
Decomposition
nitrogen
thermal stresses
thermal decomposition
cleavage
rare gases
decomposition

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Chowdhury, A., & Thynell, S. (2007). Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT. In Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion" (pp. 181-186). (Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion"). Combustion Institute.
Chowdhury, Arindrajit ; Thynell, Stefan. / Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT. Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute, 2007. pp. 181-186 (Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion").
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Chowdhury, A & Thynell, S 2007, Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT. in Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion", Combustion Institute, pp. 181-186, Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion, Charlottesville, United States, 10/21/07.

Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT. / Chowdhury, Arindrajit; Thynell, Stefan.

Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute, 2007. p. 181-186 (Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion").

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The thermal decomposition characteristics of the high-nitrogen energetic material triaminoguanidinium azotetrazolate (TAGzT) were probed by confined rapid thermolysis, in conjunction with rapidscan Fourier transform spectroscopy (FTIR) and time-of-flight mass spectrometry (ToFMS). Of particular interest were the reactions leading to the initiation of decomposition and the subsequent secondary reaction pathways forming copious quantities of molecular nitrogen. Sub-milligram quantities of the sample were subjected to high heating rates of approximately 2000 K/s at temperatures around 260°C in an ambient inert gas at one atm to achieve rapid thermolysis. The major reaction pathway involves proton transfers to form triaminoguanidine (TAG) and azobistetrazole (AzT). TAG decomposes readily under thermal stress through an N-NH2 bond scission to form N2H4, NH3, N2, and NH2NC. AzT decomposes via ring opening reactions to liberate dinitrogen and traces of HCN through various nitrene intermediates.

AB - The thermal decomposition characteristics of the high-nitrogen energetic material triaminoguanidinium azotetrazolate (TAGzT) were probed by confined rapid thermolysis, in conjunction with rapidscan Fourier transform spectroscopy (FTIR) and time-of-flight mass spectrometry (ToFMS). Of particular interest were the reactions leading to the initiation of decomposition and the subsequent secondary reaction pathways forming copious quantities of molecular nitrogen. Sub-milligram quantities of the sample were subjected to high heating rates of approximately 2000 K/s at temperatures around 260°C in an ambient inert gas at one atm to achieve rapid thermolysis. The major reaction pathway involves proton transfers to form triaminoguanidine (TAG) and azobistetrazole (AzT). TAG decomposes readily under thermal stress through an N-NH2 bond scission to form N2H4, NH3, N2, and NH2NC. AzT decomposes via ring opening reactions to liberate dinitrogen and traces of HCN through various nitrene intermediates.

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Chowdhury A, Thynell S. Confined rapid thermolysis/FTIR spectroscopy/ToF mass spectrometry of TAGzT. In Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute. 2007. p. 181-186. (Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion").