Accession Number : AD0800221

Title :   A REEXAMINATION OF THE MERCURY PHOTOSENSITIZED OXIDATION OF TETRAFLUOROETHYLENE.

Descriptive Note : Rept. for 1 Jan-26 Apr 66,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS

Personal Author(s) : Heicklen, Julian ; Knight, Vester

Report Date : JUN 1966

Pagination or Media Count : 34

Abstract : The mercury-photosensitized oxidation of C2F4 was studied at 29 and 127 C. The absorbed intensity was varied by a factor of 1000, and the O2 and C2F4 pressures by a factor of 30. The products of the reaction were cyclo-C3F6, CF2O, and C2F4O (tetrafluoroethylene oxide). Important intermediates in the oxidation are an electronically excited C2F4 molecule and the CF2O2 radical. In addition, both singlet and triplet CF2 radicals are involved. A detailed reaction mechanism is presented and several rate constant ratios are obtained. Where comparisons with literature values could be made, agreement is good.

Descriptors :   (*PHOTOLYSIS, HALOGENATED HYDROCARBONS), (*ETHYLENES, FLUORINE COMPOUNDS), (*OXIDATION, ETHYLENES), PHOTOSENSITIVITY, MERCURY LAMPS, EXCITATION, FREE RADICALS, CYCLOPROPANES, ATOMIC ORBITALS, ETHYLENE OXIDE, INFRARED SPECTRA, BAND SPECTRA.

Subject Categories : Radiation and Nuclear Chemistry
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE