- Author
- Modica, A. P.
- Title
- Chemical Kinetics of COF₂ Decomposition in Shock Waves.
- Coporate
- Avco Government Products Group, Lowell, MA
- Report
- SAMSO TR-69-145; AVSSD-024-68-RR, November 15, 1968, 38 p.
- Contract
- F04-701-68-C-0036
- Keywords
- shock waves | reaction kinetics | decomposition | argon | nitrogen
- Identifiers
- teflon oxidation; infrared spectra; carbonyl fluoride; temperature dependence; stream-tube program
- Abstract
- An infrared technique has been used to monitor the thermal decomposition of carbonyl fluoride (COF₂) in argon and nitrogen diluent behind incident and reflected shock waves. Data was taken in the temperature range 2400 deg to 3600 deg K at total pressures between 0.2 and 26 atm. Direct sampling of reflected shock mixtures with a time-of-flight mass spectrometer provided knowledge of the decomposition products. The pressure and temperature dependence of the COF₂ dissociation rate constants are discussed in terms of the Rice-Ramsperger-Kassel (RRK) unimolecular theory. Rate constants for the fluorine extraction reactions and COF disproportionation reaction were obtained by curve-fitting the complete COF₂ kinetic histories with computer profiles. A chemical nonequilibrium stream-tube program which includes wall boundary layer effects was used for data analysis.