KINETIC EQUATIONS FOR RADICAL-CHAIN OXIDATION INVOLVING PROCESS-INHIBITING ALKYL (OR HYDRO)TETRAOXYL FREE RADICAL

The derivation of kinetic equations for the oxidation processes by free-radical nonbranched-chain mechanism is shown. This based on proposed reaction scheme initiated addition free radicals to multiple bond molecular oxygen includes peroxyl radical molecule form tetraoxyl radical. competes with chain propagation reactions through a reactive evolution stage in this involves few radicals, one which – alkyl(or hydro)tetraoxyl relatively low-reactive and inhibits process shortening length. rate (containing three parameters be determined directly) are deduced using quasi-steady-state treatment. These were used describe γ-induced liquid o-xylene at 373 K hydrogen dissolved water containing various amounts 296 K. ratios constants competing defined. In these increase its concentration begins act as an autoinhibitor (or antioxidant), peroxide formation function has maximum. It shown that maximum curves arises from competition between hydrocarbon hydrogen) molecules dioxygen reacting emerging 1:1 adduct From energetic standpoint possible nonchain pathways routes ozone decay via hydroxyl upper atmosphere (including yielding hydrotetraoxyl radical, can intermediate sequence conversions biologically hazardous UV radiation energy) examined. energetics key radical-molecule gas-phase considered.