CFCs replacements: Reactivity and atmospheric lifetimes of a series of Hydrofluoroolefins towards OH radicals and Cl atoms

Add time:07/12/2019    Source:sciencedirect.com

A study of the temperature dependence of the gas-phase reactions of OH radicals and Cl atoms with a series of hydrofluroolefins: 2-fluoropropene (CH3CFCH2), hexafluoroisobutylene ((CF3)2CCH2) and (E/Z)-1,2,3,3,3-pentafluoropropene ((E/Z)-CF3CFCHF) has been performed. The relative-rate technique was used to determine rate coefficients over the temperature range 287–313 K.This work constitutes the first temperature dependence study of OH radicals and Cl atoms with 2-fluoropropene and (E/Z)-1,2,3,3,3-pentafluoropropene and for the reaction of Cl with hexafluoroisobutylene. Atmospheric implications are discussed with particular reference to the rate coefficients obtained as a function of the temperature.

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