KINETIC ASPECTS OF ALKYLAROMATIC HYDROCARBON OXIDATION IN EMULSIONS

The kinetic study of cumene oxidation in two-phase catalytic systems w as carried out. The effects of stirring intensity, the ratio between a queous and hydrocarbon phases, the amount of emulgator, and the temper ature were studied. The systems studied were: (1) sodium laurate; (2) cetyl trimethylammonium bromide (CTMABr) without other catalysts; (3) sodium dodecyl sulfate and CuSO4; and (4) CTMABr and CuBr2 with and wi thout additives of the electrolyte NaBr. It was shown that the high ra te and the selectivity of the cumene emulsion oxidation at a given tem perature, the ratio between the volume of aqueous and hydrocarbon phas es, and the micellar surfactant concentration in the aqueous phase are achieved at a high intensity of the system stirring, when the entire micellar phase is distributed over the interphase, and when radical in itiation takes place in the interphase layer of the lyotropic surfacta nt liquid crystal, which stabilizes the emulsion.