Chemical Kinetics Data of Fluorinated Alcohols and Ethers

Igor Morozov, Semenov Institute of Chemical Physics RAS, Russia

The Semenov Institute of Chemical Physics Database includes essentially all measured in the Institute kinetics results for thermal gas-phase chemical reactions. The database contains over 8,000 separate reaction records. The present paper focuses on the hydrofluoroethers (HFEs) and the partially fluorinated alcohols (FAs). Reduction of the ozone depleting chlorofluorocarbons (CFCs) in accordance with the Montreal Protocol has led to investigations of CFC replacements. Like most of the CFCs, the CFC replacements also absorb thermal infrared radiation and may contribute to an enhanced greenhouse effect. Several studies have investigated the climate effect of CFC replacements in use or with the potential for use in the future. The atmospheric fate of FAs and HFEs hopefully follows an oxidative degradation cycle that results to environmentally friendly species. Before a global turn into some new type of refrigerants - a process demanding expensive and time-consuming changes - it is, however, necessary to perform detailed studies of their physical and chemical properties. The chemical studies should not only involve their own reactions with all atmospherically important species, but also those of their degradation products.

The quantification of the possible roles of FAs and HFEs as "greenhouse gases" requires accurate and precise information on the compound's residence time in the atmosphere, which is controlled primarily by their reaction with OH radicals and to a lesser extent with Cl atoms. OH reaction rate coefficients have been reported for a number of HFEs.

Results of the measurements of the rate constants of the reaction of F atoms, NOx radicals and Ox with fluorinated alcohols and ethers wil be present.



Keywords: Chemical Kinetics