Experimental and computational studies of the thermal decomposition of halon 1211

Hai Yu, Eric M. Kennedy, Azhar Uddin, Simon P. Sullivan, Bogdan Z. Dlugogorski

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Thermal pyrolysis of halon 1211 (CBrClF2). diluted in nitrogen, in a tubular alumina reactor, has been studied over the temperature range of 773-1073 K at residence times from 0.3 to 2 s. At temperatures below 973 K, the major products were CCl2F2, CBr2F2, C2Cl2F4, C2BrClF4, C 2F4, and C2Br2F4. Further increasing temperature resulted in the formation of CBrF3, CCLF 3, and many other species whose formation necessitated the rupture of C - F bonds. Coke formation was also observed on the surface of the reactor at high temperatures. A kinetic reaction scheme involving 16 species and 25 reaction steps was developed and applied to model the thermal pyrolysis of halon 1211 over the temperature range of 773 - 973 K. Sensitivity analysis suggests that the reaction CBrClF2 + CClF2 → CCl 2F2 +CBrF2 constitutes the major pathway for the decomposition of halon 1211 under the conditions investigated.

Original languageEnglish
Pages (from-to)134-146
Number of pages13
JournalInternational Journal of Chemical Kinetics
Volume37
Issue number3
DOIs
Publication statusPublished - Mar 2005
Externally publishedYes

Fingerprint

halon
Halon
thermal decomposition
Pyrolysis
Hot Temperature
Temperature
pyrolysis
reactors
temperature
Coke
coke
sensitivity analysis
Aluminum Oxide
reaction kinetics
aluminum oxides
Reaction kinetics
Sensitivity analysis
Rupture
decomposition
nitrogen

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Experimental and computational studies of the thermal decomposition of halon 1211. / Yu, Hai; Kennedy, Eric M.; Uddin, Azhar; Sullivan, Simon P.; Dlugogorski, Bogdan Z.

In: International Journal of Chemical Kinetics, Vol. 37, No. 3, 03.2005, p. 134-146.

Research output: Contribution to journalArticle

Yu, Hai ; Kennedy, Eric M. ; Uddin, Azhar ; Sullivan, Simon P. ; Dlugogorski, Bogdan Z. / Experimental and computational studies of the thermal decomposition of halon 1211. In: International Journal of Chemical Kinetics. 2005 ; Vol. 37, No. 3. pp. 134-146.
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