Kinetics of the Thermal Decomposition of Tetrafluoroethylene Oxide

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Abstract
The thermal stability of gaseous tetrafluoroethylene oxide has been examined between 40° and 140°C. In this range of temperatures two distinct modes of decomposition have been observed. At higher temperature a unimolecular process takes place with the formation of carbonyl fluoride, tetrafluoroethylene, and perfluorocyclopropane. Isomerization occurs through a heterogeneous reaction on the wall in the low-temperature range leading to trifluoroacetyl fluoride. The unimolecular behavior is treated according to the Rice—Ramsperger—Kassel theory. A kinetic scheme, which is in agreement with the experimental results, is proposed for the formation of the products.