The Determination of Rate-Limiting Steps during Soot Formation
Abstract
A single-pulse shock tube has been used to examine toluene pyrolysis and the rich oxidation of benzene diluted in argon over the temperature range of 1200 to 2000K and at total pressures of ten to thirteen atmospheres. Dwell times were about 500 microseconds. Collected gas samples were analyzed using gas chromatography for hydrogen, carbon oxides and C1- to C14- hydrocarbons. Low molecular weight products during benzene oxidation include cyclopentadiene and vinylacetylene and support literature proposals for oxidation of benzene. High molecular weight products are dominated by species containing mixtures of five- and six- membered rings. During toluene pyrolysis very rapid production of polyaromatic hydrocarbons occurs between 1400 and 1450K, consistent with temperatures at which particle inception occurs in diffusion flames.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 27, 1989
- Accession Number
- ADA208866
Entities
People
- D. J. Seery
- J. J. Sangiovanni
- M. B. Colket
- Richard J. Hall
Organizations
- United Technologies Corporation