Abstract
A simple kinetic equation describing nonmonotonic (with a maximum) dependence of the hydrogen peroxide and water formation rate on the oxygen concentration was derived by the quasi-steady-state treatment in terms of the nonbranched-chain free-radical mechanism of noncatalytic hydrogen oxidation involving the relatively low-reactive radical HO4•, which inhibits the chain process. Possible nonchain pathways of the free-radical oxidation of hydrogen, the energetics of key radical-molecule reactions, and the routes of ozone decay from the energetics standpoint via the reaction with the HO• radical in the upper atmosphere (including the addition yielding the HO4• radical, which can be an intermediate in the sequence of conversions of biologically hazardous UV radiation energy) were considered.
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