Abstract
The oxidation of benzene in the regions of both slow reaction and ignition has been studied in a flow system at atmospheric pressure and at a temperature of 685° C. Complete analyses of the products have been carried out, and the variation in the concentrations of the principal products with mixture composition and reaction time has been obtained. Parallel measurements of the pyrolysis of benzene, relevant to the oxidation work, have been made. The oxidation has been shown to proceed via successive hydroxylation of the ring to the dihydroxy stage; the ring then breaks, the fission products being rapidly degraded to C
2
hydrocarbons, formaldehyde, carbon oxides, hydrogen and water. A mechanism based on the instability of a phenol precursor in the region of ignition has been proposed.
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