- Author
- Wilk, R. D. | Miller, D. L. | Cernansky, N. P.
- Title
- Intermediate Temperature Oxidation of Alkenes: Reactions of Alkenyl Radicals.
- Coporate
- Drexel Univ., Philadelphia, PA
- Sponsor
- Army Research Office, Washington, DC
- Report
- WSS/CI Paper 86-6,
- Contract
- DAAG29-85-K-0253
- Book or Conf
- Combustion Institute/Canadian and Western States Sections. Spring Meeting, 1986. April 27-30, 1986., Banff, Alberta, Canada, 1-17 p., 1986
- Keywords
- alkenes | thermal decomposition | radicals
- Abstract
- The intermediate temperature oxidation chemistry of alkenes was studied with emphasis on investigating the reaction paths of alkenyl radicals. Experiments on the oxidation of ethene and propene in air were conducted using a static reactor at temperatures in the range 696-731 K. Concentration profiles of stable species were obtained using gas chromatographic analysis. Results of the product analysis indicated that reaction paths involving H atom loss from the alkenyl radicals were not important at intermediate temperatures. Results from ethene oxidation were consistent with the theory of Baldwin and Walker that the reaction of vinyl and O2 proceeds through a 4-center reaction producing formaldehyde. Product analyses following the hot ignition of ethene/air mixtures showed the formation of acetylene. Likewise acetylene, propyne and allene were formed following hot ignition of propene/air mixtures. The high temperature results demonstrate a change in the reaction path of alkenyl radicals, with thermal decomposition and reaction with H atoms dominating at high temperatures.