Both main and side reaction kinetics of non-catalytic peroxidation of liquid phase isopropyl benzene (IPB) were investigated

including byproduct formation such as α-methyl benzyl alchohol (MBA) and acetophenone (ACP)

and decomposition pathway of ROOR (DCP). Based on free radical chain reaction mechanism

a kinetic model was developed

in which IPB hydroperoxide (IPBHP)

MBA

ACP and DCP were considered. The prediction by this kinetic model is agreed well with the experimental data

if the rate constants were used which were obtained by fitting of the experimental data at 373—404 K. The activation energies estimated were larger for all side reactions than for the main reaction. DCP decomposition requires the presence of oxygen. These data obtained could be helpful for deep understand of the reaction mechanism of liquid phase of alkyl aromatics and could be used as the fundamental data for design and optimization of industrial liquid phase oxidation of IPB.