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- Title
Role of the HO radical in hydrogen oxidation at the third self-ignition limit.
- Authors
Azatyan, A.; Andrianova, Z.; Ivanova, A.
- Abstract
It is demonstrated by simultaneous analysis of experimental data and the results of numerical simulation that, at 100 kPa, the H2/O2 mixture self-ignites only owing to the occurrence of a chain avalanche. Self-heating becomes significant in the course of chain combustion and strengthens the chain avalanche. The accelerating decomposition of H2O2, which results from the reaction between HO and H2, contributes to chain branching and determines the character of the chain thermal explosion. The role of the HO radical depends on the chain process conditions, consisting of chain termination as a result of the partial loss of HO at the initial self-acceleration stage, H atom regeneration, and participation in the second branched cycle under conditions of accelerated H2O2 decomposition.
- Subjects
HYDROGEN; OXYGEN; OXIDATION-reduction reaction; CHEMICAL decomposition; BIOCHEMICAL mechanism of action; CHEMICAL kinetics; COMBUSTION
- Publication
Kinetics & Catalysis, 2010, Vol 51, Issue 3, p337
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S002315841003002X