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OZONE PRODUCTION FROM IRRADIATION OF ACETYLENE/CHLORINE MIXTURES IN AIR
Citation:
Jr, B. AND E. Edney. OZONE PRODUCTION FROM IRRADIATION OF ACETYLENE/CHLORINE MIXTURES IN AIR. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/285 (NTIS PB90185232).
Description:
The reaction of chlorine radicals with acetylene in air in the absence of oxides of nitrogen result In the formation of ozone. o ozone is observed when chlorine radicals react with methylacetylene or ethylacetylene under similar conditions. ormyl chloride is observed in all systems. echanism is proposed for the major products observed in the acetylene reaction. he addition of chlorine to acetylene followed by molecular oxygen addition results in the formation of the peroxychloroethylene radical. ossible explanation for O3 production is elimination of an oxygen atom from such radicals with excess energy, followed by reaction with molecular oxygen. n the case of substituted acetylenes the larger radicals formed may be able to dissipate the excess energy. Without the formation of atomic oxygen, ozone is not formed. his study demonstrates another mechanism through which ozone may be formed in addition to NO2 photolysis. ore work is required to more fully clarify the mechanism for O3 production.