Identification and temporal behavior of radical intermediates formed during the combustion and pyrolysis of gaseous fuels: kinetic pathways to soot formation. Progress report, September 1, 1982-June 30, 1983
The objective is to investigate the reaction kinetics of soot formation. The pyrolysis of toluene, benzene, butadiene and allene have been studied. The pyrolysis rate was measured by sampling gas from the reflected shock zone with a time-of-flight mass spectrometer. The identification of intermediates and final products formed during the reaction time was used to formulate the sequence of steps leading to soot formation. Little or no evidence was found for the ring condensation route to soot formation. The primary products formed from the pyrolyses of these compounds are C/sub 2/H/sub 2/, C/sub 4/H/sub 2/, and C/sub 6/H/sub 2/. A common feature is the presence of acetylene as a major product and its subsequent thermal stability at low temperatures and its role in the formation of polyacetylene at higher temperatures. An attempt is being made to model the concentration profiles obtained for C/sub 2/H/sub 2/, C/sub 4/H/sub 2/, C/sub 6/H/sub 2/, and C/sub 8/H/sub 2/ and to construct a reliable set of thermochemical and kinetic parameters that may be inserted into modeling for the pyrolyses of toluene, benzene, allene, and butadiene. (ATT)
- Research Organization:
- New Orleans Univ., LA (USA). Dept. of Chemistry
- DOE Contract Number:
- AS05-79ER10505
- OSTI ID:
- 6770488
- Report Number(s):
- DOE/ER/10505-T1; ON: DE83007087
- Country of Publication:
- United States
- Language:
- English
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Identification and temporal behavior of radical intermediates formed during the combustion and pyrolysis of gaseous fuels: kinetic pathways to soot formation. Progress report, September 1, 1979-August 31, 1982
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALLENE
PYROLYSIS
BENZENE
BUTADIENE
SOOT
CHEMICAL REACTION YIELD
TOLUENE
CHEMICAL REACTION KINETICS
MASS SPECTROSCOPY
RADICALS
REACTION INTERMEDIATES
RESEARCH PROGRAMS
AROMATICS
CHEMICAL REACTIONS
DECOMPOSITION
DIENES
HYDROCARBONS
KINETICS
ORGANIC COMPOUNDS
POLYENES
REACTION KINETICS
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
YIELDS
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)