Accession Number : AD0664088

Title :   COMBUSTION KINETICS OF TETRAFLUOROETHYLENE.

Descriptive Note : Final technical rept.,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF ENGINEERING MECHANICS

Personal Author(s) : Matula,Richard A.

Report Date : SEP 1967

Pagination or Media Count : 26

Abstract : The oxidation kinetics of tetrafluoroethylene and the pyrolysis of carbonyl fluoride were experimentally studied in the temperature range 500-750K. Both infrared spectroscopic and gas chromatographic techniques were developed for the quantitative analysis of all important reaction products. The pyrolysis of CF2O was studied in the temperature range 500-750K. When the studies are conducted in a quartz reactor vessel, the only significant gaseous products are CF2O, CO2, and SiF4. Preliminary analysis of the kinetic data indicate that both the heterogeneous rate of production of CO2 and rate of consumption of CF2O are half order with respect to CF2O. Prior to the initiation of the C2F4 oxidation experiments, the pyrolysis of C2F4 was studied at 636K. The only important product was c-C4F8, and the rate was shown to be second order with respect to C2F4. The second order rate constants as evaluated from both the experimentally determined rate of production of c-C4F8 and the rate of decrease of C2F4 are reported. Preliminary oxidation experiments employing an equimolar mixture of O2 and C2F4 at 636K and an initial pressure of 50 mm of Hg indicate that the oxidation reaction is fast and that only the significant reaction products are CF4, CO2, and CF2O. (Author)

Descriptors :   (*HALOGENATED HYDROCARBONS, *COMBUSTION), FLUORINE COMPOUNDS, ETHYLENES, OXIDATION, REACTION KINETICS, PYROLYSIS, INFRARED SPECTRA, GAS CHROMATOGRAPHY, HALOCARBON PLASTICS, ABLATION, COMBUSTION PRODUCTS, OXYFLUORIDES

Subject Categories : Polymer Chemistry
      Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE