Flow Reactor Studies Over Wide Temperature and Pressure Ranges of Atom and Radical Reaction Rates Important in Ignition and Combustion.
Abstract
The completed research consists of critical evaluations of atom and radical reactions in terms of rate theory, the measurement of elementary reaction rate parameters for several important reactions, and the building and use of a new flow system for the study of tdhe H + O2 + M yields HO2 + M recombination. The experimental studies include the establishment of the primary products of the O + C2H4 reaction, viz. C2H3O + H in approximately 80% yield; the measurement of five H-atom abstraction reactions of OH with C2H6 and four Cl-and F-substituted ethanes; the proof, by use of 18O, that the fast reaction O + HO2 yields OH + O2 proceeds via an intermediate HO3* adduct; and the first direct measurement, by laser-induced fluorescence, of the CH3O + NO2 reaction rate over the temperature range 250 to 473 K. The 18O + NO, O2 isotope exchange reaction rates were measured and compared with theory, and a new, higher pressure flow reactor apparatus was built and the rate constants for H+02+M measured at 298K for M = He, N2, CH4, and H2O. Keywords:Reaction rate parameters; Flow reactors; O-atom, OH-radical, CH3O-radical reactions; Transition state theory, Three-parameter rate constant expressions; Radical-radical reactions; 18O isotope exchange reactions; H + O2 + M recombination; Ethane; Etylene.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1985
- Accession Number
- ADA156931
Entities
People
- F. Kaufman
Organizations
- University of Pittsburgh