Accession Number : AD0713144

Title :   COMBUSTION KINETICS OF TETRAFLUOROETHYLENE.

Descriptive Note : Annual summary rept. 1 Jul 69-30 Jun 70,

Corporate Author : DREXEL UNIV PHILADELPHIA PA COMBUSTION KINETICS LAB

Personal Author(s) : Matula,Richard A.

Report Date : JUL 1970

Pagination or Media Count : 47

Abstract : The thermal dissociation of carbonyl fluoride (CF2O) in excess argon, CF20 yields CFO +F, was studied behind both incident and reflected shock waves. Preliminary kinetic data have been obtained in the temperature and total pressure ranges 2500-3100K and 0.5-14 atmospheres. The reaction was found to be unimolecular, and the pressure and temperature dependence of the CF2O dissociation rate constant were analyzed with the aid of both the Lindemann and Rice-Ramsperger-Kassel unimolecular theory of reaction rates. Theoretical and experimental values of the spectral absorption coefficient and integrated intensity of the 5.15 micron fundamental band of CF2O are presented. The experimental and theoretical results are in excellent agreement in the temperature range 300-600K and hence it is proposed that the theoretical model can be used to predict the shape and width of this band as a function of temperature. The burning velocities of mixtures of C3F6-O2, c-C4F6-O2 and c-C4F8-O2 at atmospheric pressure are reported. The peak burning velocity of fluorocarbon-oxygen flames can not be correlated with peak adiabatic flame temperature but they can be correlated with peak calculated equilibrium fluorine atom concentrations. (Author)

Descriptors :   (*FLUORIDES, *DISSOCIATION), (*HALOGENATED HYDROCARBONS, *COMBUSTION), FLUORINE COMPOUNDS, REACTION KINETICS, SHOCK WAVES, THERMOCHEMISTRY, FLAME PROPAGATION, OXYGEN, DIFFUSION, INFRARED SPECTROSCOPY, ATTENUATION

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE