Addition of the Peroxyl Radicals RO₂^• to C₇₀, C₆₀ Molecules — the Dominant Reaction Inhibition by Fullerenes of the Hydrocarbons Oxidation

Abstract

For the first time, the elementary reaction responsible for the inhibition by fullerenes of the liquid-phase oxidation of hydrocarbons was identified. A study of the product of addition to fullerene С₆₀ of radical intermediates of the cumene oxidation shows that the inhibition caused by addition of RO₂ ^• peroxyl radicals to C₆₀ and C₇₀ molecules. The measurement of the inhibition parameters allows concluding that C₇₀ fullerene is a more effective inhibitor of cumene and ethylbenzene oxidation than C₆₀. The alkyl derivatives of C₆₀ were not formed at oxidation hydrocarbons in the presence of C₆₀ due to their decay in the reaction with oxygen.

Keywords:

• Fullerenes
• inhibitors
• reaction mechanisms
• peroxides