Mechanism for the combustion of methane-oxygen mixtures in the presence of added N/sub 2/O

Journal Article · Sun Mar 01 04:00:00 EST 1981 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:5806826

Borisov, A A; Dragalova, E V; Zamanskii, V M; Lisyanskii, V V; Skachkov, G I

The combustion delays (tau) of fuel-depleted and stoichiometric methane-oxygen mixtures with from 5 to 40% added N/sub 2/O were measured in a steady-state bypass system and in reflected shock waves at 880 to 1880/sup 0/K. In the presence of significant amounts of N/sub 2/O, the formation of active species in the CH/sub 4/-O/sub 2/ chain reaction occurs largely in the decomposition of nitrous oxide: N/sub 2/O+M ..-->.. N/sub 2/+O+M, whose rate is known reliably in a wide range of conditions. The introduction of a new initiation reaction permits a significant simplification of the reaction mechanism. An approximate solution of the thermal balance equation was obtained which relates tau to the thermophysical and kinetic features of the system. The reaction rate for the chain-propagation step, CH/sub 3/ + O/sub 2/ ..-->.. CH/sub 2/O + OH, k = 10/sup 12/ /sup 30/ exp (-6670/T) cm/sup 3//mole sec, was determined in the range from 880 to 1670/sup 0/K. 3 figures, 2 tables.

• Research Organization: Inst. of Chemical Physics, Moscow, USSR
• OSTI ID: 5806826
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 22:2; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION KINETICS
DECOMPOSITION
DISPERSIONS
ELEMENTS
HIGH TEMPERATURE
HYDROCARBONS
KINETICS
METHANE
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
REACTION KINETICS
VERY HIGH TEMPERATURE