Journal of the Chemical Society - Faraday Transactions p. 2361 - 2365 (1991)
Update date:2022-08-11
Topics:
Lodhi, Zulfiqar H.
Walker, Raymond W.
The decomposition of 4,4-dimethylpent-1-ene (DMP) in the presence of O2 has been used as a source of allyl and HO2 radicals between 400 and 480 deg C.Propene was added to the mixtures of DMP and O2 in order to monitor a range of mixture composition, rate constants have been obtained for reaction (9) and (10). <*>CH2CHCH2 + HO2 -> CO + product (9); <*>CH2CHCH2 + HO2 -> C3H6 + HO2 (10).At 400 deg C, k9 = 3.95 x 109 and k10 = 1.42 x 109 dm3 mol-1 s-1 and both show a slight increase (within experimental error) with temperature, 15percent and 30percent, repectively, at 480 deg C.Strong evidence is obtained for the formation of CO in the reaction between allyl radicals and O2 a minor extent through a direct H-atom abstraction route which is reverse of the chain initiation reaction (16).C3H6 + O2 -> <*>CH2CHCH2 + HO2 (16).The available kinetic data for the reaction between allyl radicals and O2 are summarised.
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