Autooxidation chain-propagation

Autooxidation. Liquid-phase oxidation of hydrocarbons, alcohols, and aldehydes by oxygen produces chemiluminescence in quantum yields of 10 to 10 ° ein/mol (128—130). Although the efficiency is low, the chemiluminescent reaction is important because it provides an easy tool for study of the kinetics and properties of autooxidation reactions including industrially important processes (128,131). The light is derived from combination of peroxyl radicals (132), which are primarily responsible for the propagation and termination of the autooxidation chain reaction. The chemiluminescent termination step for secondary peroxy radicals is as follows ... 

Light during processing, handling, and use. Typically are radical scavengers which interrupt the chain propagation steps of polymer autooxidation Absorb UV light to prevent photooxidation Tinuvin 327, 328, 384, 440, etc. (derivatives of... 

We call this type of reaction autooxidation because it is a an autocatalytic process (the reaction generates radical intermediates that propagate chain reactions) and it is an oxidation that converts alkanes into alkyl peroxides. 

A very striking example is provided by autooxidation. Autooxidation is a radical chain oxidation of alkyl derivatives RH by oxygen to hydroperoxides ROOH, involving the following propagation steps ... 

The final step is undoubtedly a typical radical chain autooxidation (p. 274), involving the propagation steps... 

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