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 language | English |
|---|---|
| Pages (from-to) | 134-146 |
| Number of pages | 13 |
| Journal | International Journal of Chemical Kinetics |
| Volume | 37 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2005 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Experimental and computational studies of the thermal decomposition of halon 1211
AU - Yu, Hai
AU - Kennedy, Eric M.
AU - Uddin, Azhar
AU - Sullivan, Simon P.
AU - Dlugogorski, Bogdan Z.
PY - 2005/3
Y1 - 2005/3
N2 - 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.
AB - 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.
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U2 - 10.1002/kin.20055
DO - 10.1002/kin.20055
M3 - Article
VL - 37
SP - 134
EP - 146
JO - International Journal of Chemical Kinetics
JF - International Journal of Chemical Kinetics
SN - 0538-8066
IS - 3
ER -