Patent ID: 7335798
Filing Date: 2008-02-26
Classification: C07C

Abstract:
1. A method of producing cumene hydroperoxide comprising: reacting in a series of oxidation reactors oxygen with cumene by passing the oxygen through a water-cumene emulsion in the presence of a mixture of an aqueous solution of an ammonium salt with a concentration of 0.001–0.5 mass % based upon a total mass of the aqueous solution of the ammonium salt and an aqueous solution of ammonia with a concentration of 0.001–0.5 mass % based upon a total mass of the aqueous solution of the ammonia, wherein the mixture is fed into each oxidation reactor of the series of oxidation reactors in an ammonia:ammonium salt mass ratio of between 1:100 to 100:1; wherein the ammonium salt is selected from the group consisting of ammonium bicarbonate, ammonium carbonate, ammonium carbamate, and a mixture thereof; and decomposing the cumene hydroperoxide acid to afford a phenol.