No abstract

Based on a kinetic model involving competing parallel reactions for free-radical addition to the double bond of a molecule with the formation of 1 : 1 adduct and participation of three radical types in the chain propagation, versions of the rate equation with 1-3 measurable parameters are derived. These versions make it possible to describe the nonmonotonic (with maximum) dependence of the formation rate of an addition product on concentration of the unsaturated compound. The unbranched chain process occurs in binary liquid systems comprising saturated and unsaturated components at comparable concentrations. Application of the competition kinetics of free-radical addition to oxidation of some hydrocarbons is discussed when the reaction that competes with chain propagation reactiens invo!ving the alkylperoxy radical RO, gives the cyclic alkylhydrotetraoxy radical [ R ( -~l 0 4 H ] as a less reactive radical inhibiting the chain process of formation of the main products of oxidation.

No abstract

No abstract

No abstract