High-Temperature Oxidation Mechanism and Active Oxygen Concept

Usually, such a situation occurs at induced decomposition of peroxides and hydroperoxides of organic substances. [Pg.13]

As mentioned above, the secondary reaction in the system is caused by a new reaction of free radical interaction (produced in the elementary dissociation of the radical initiator) with the initiator. In this case, one more active intermediate particle (free radical), not observed at usual peroxide decomposition, is generated in the system. Owing to formation of this active site, conjugated reaction proceeds by the radical-chain mechanism. Thus products formed may be analogous to those obtained at usual initiator decomposition, or different products may be formed—this circumstance is of no importance for detection of induced decomposition. [Pg.13]

Thus the primary reaction in di-fe/f-butyl peroxide decomposition is a usual decomposition reaction in the scheme (1.10) the secondary reaction induced by the initial one is described by the scheme (1.11). It is worthy of note that both decomposition reactions are described by the same overall equation, and free radical is the general intermediate particle. [Pg.13]

The free radical inducing peroxide decomposition may be obtained from another substance—free radical generator. In this case, the primary reaction is the one that generates active sites, and the secondary decomposition one may proceed via formation of previously unobserved products. [Pg.13]

Let us now pass on to hydrocarbon oxidation mechanisms at high temperatures, when cracking and dehydrogenation become the main reactions in the system. [Pg.13]

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