Patent ID: 6649140
Filing Date: 2003-11-18
Classification: C01B

Abstract:
A process for the continuous production of alcoholic or hydro-alcoholic solutions having more than 50% by weight of at least one alcohol, of hydrogen peroxide, which comprises:(a) feeding to a reactor, which comprises a catalyst comprising palladium and platinum metals, heterogeneous and maintained in dispersion in a liquid reaction medium: (i) a liquid stream comprising an alcohol or an alcohol-water mixture, having more than 50% by weight of at least one alcohol, an acid promoter, and a halogenated promoter wherein the concentration of acid promoter is from 20 to 1000 mg per kg of solution and the concentration of the halogenated promoter is from 1-10 mg per kg of solution; (ii) a gaseous stream of hydrogen, oxygen and an inert gas, wherein the concentration of hydrogen is lower than 4.5% by volume and the concentration of oxygen is lower than 21% by volume, the remainder being the inert gas; (b) removing from the reactor: (iii) a liquid stream comprising stream (i), hydrogen peroxide and water produced by reaction, wherein the concentration of hydrogen peroxide ranges from 2% to 10% by weight; and (iv) a gaseous stream comprising hydrogen, oxygen and the inert gas.