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Structure Study of a Cf2br2-inhibited Methane Flame. Effect of Cf2br2 on Composition, Net Reaction Rates, and Rate Coefficients.

Authors
Papp-JF; Lazzara-CP; Biordi-JC
Source
MISSING :32 pages
Link
NIOSHTIC No.
10002129
Abstract
The microstructures and a cf2br2-inhibited methane flame and its uninhibited analog have been determined using molecular beam-mass spectrometry. The slightly lean flames were stabilized on a cooled porous plug burner at reduced pressure. Composition profiles of stable, intermediate, and radical species and temperature profiles revealed the following inhibition effects; a shift of the primary reaction zone to higher temperatures, a higher maximum flame temperature, an increase in the ch3 concentration, and a reduction in the h2co, h, o, and oh concentrations. Kinetic analyses of the data yielded rate coefficients at flame temperatures for the reactions h + ch4 -> ch3 + h2, h + o2 -> oh + o, CO + oh -> co2 + h, and ch3 + o -> h2co + h. Cf2br2 is judged to decay by thermal decomposition and abstraction reactions.
Publication Date
19810101
Document Type
IH; Report of Investigations
Fiscal Year
1981
Identifying No.
RI 8551
NIOSH Division
PRC;
Source Name
MISSING
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division