METHOD OF PRODUCING ETHYLBENZENE HYDROPEROXIDE Russian patent published in 2020 - IPC C07C407/00 C07C409/08 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to petrochemical industry, in particular to production of organic hydroperoxide by oxidation of hydrocarbon with oxygen-containing gas, which is used in processes of combined production of styrene, isoprene, alkylene oxides, for example, propylene, ethylene, amylenes. Method of producing ethylbenzene hydroperoxide by liquid-phase oxidation of ethylbenzene is carried out with oxygen-containing gas at temperature of 110–140 °C in presence of catalyst. Catalyst used is carboxylate Mn⁺² or Co⁺², which is preliminarily treated with hydrogen peroxide or ethylbenzene hydroperoxide at ratio of hydrogen peroxide or ethylbenzene hydroperoxide to metal from 0.5 to 1.1 mol/mol at temperature of (-20)–(-1) °C. Ethylbenzene oxidation is carried out at catalyst concentration equal to 1⋅10^-6–1⋅10^-5 mol/l in terms of metal.

EFFECT: technical result is to simplify the method of oxidising ethylbenzene with selectivity of formation of ethylbenzene hydroperoxide to 96 mol% by conducting an oxidation process in one or in a battery of two reactors using a composition which is simpler in composition and in a lesser amount, at concentration equal to 1⋅10^-6–1⋅10^-5 mol/l in terms of metal, and with less by 25 % of oxidation time and thereby increase efficiency of the process of converting hydrocarbon to hydroperoxide.

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