Chemical flame inhibition using molecular beam mass spectrometry. An examination of the partial equilibration hypothesis and radical recombination in 1/20 atm methane flames. Report of investigations

Technical Report · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7299368

Biordi, J C; Lazzara, C P; Papp, J F

Radical and stable species concentration profiles determined in 0.042 atm slightly lean CH4-O2-Ar flames were used to test the partial equilibrium hypothesis for several bimolecular reactions in the primary and secondary reaction zones. The reactions examined were (1) H+O2=OH+O, (2) O+H2=OH+H, (3) OH+H2=H2O+H, (4) OH+OH=H2O+O, (5) CO+OH=CO2+H, (6) Br+HBr=H+Br2, (7) H+HBr=H2+Br, Balance occurs, except for reaction (6), only whenthe maximum flame temperature is reached. The important recombination reactions were judged to be H+OH+M yields H2O+M and H+O2+M yields HO2+M with rate coefficients of 5 x 10 to the 15th power(cm to the 6th power)/(mole squared) sec for M=Ar at T= 1750 + or - 150K.

• Research Organization: Bureau of Mines, Pittsburgh, PA (USA). Pittsburgh Mining and Safety Research Center
• OSTI ID: 7299368
• Report Number(s): PB-266752; BM-RI-8222
• Country of Publication: United States
• Language: English

Related Subjects

090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
BROMINE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
CRYOGENIC FLUIDS
ELEMENTS
EQUILIBRIUM
FLAMES
FLUIDS
GASES
HALOGENS
HYDROCARBONS
KINETICS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
RADICALS
REACTION KINETICS
THERMOCHEMICAL PROCESSES