METHOD OF PRODUCING HYDROGEN PEROXIDE, CATALYST, AND METHOD OF PREPARATION THEREOF Russian patent published in 1997 - IPC

FIELD: hydrogen peroxide production. SUBSTANCE: hydrogen peroxide is prepared via direct catalytic oxidation of hydrogen by oxygen in acidic aqueous medium in presence of Na⁺,F^-,Cl^- provided by adding NaCl and NaF in quantities 3-30 and 2-10% based on catalyst weight, respectively. Catalyst contains at least one VIII group metal, preferably 0.1-10 wt % Pd, applied on carbon-containing carrier: fluoridated carbon with fluoridation rate 10-65% or partly wettable carbon. Process is carried out in autoclave under stirring at temperature from freezing point of aqueous medium to 60 C, pressure 2.5-20 MPa, and partial pressure of hydrogen below detonation limit. Catalyst is prepared by adding sodium citrate solution to VIII group metal chloride, e.g. PdCl₂, heating resulting mixture, adding metal and fluoridated or partly wettable carbon, evaporation, and reducing solid residue in hydrogen atmosphere at elevated temperature to produce 5-6% hydrogen peroxide. Selectivity of reaction is close to 100% and productivity of catalytic oxidation 5 to 11 g/l-g H₂O₂. EFFECT: improved efficiency of process. 11 cl, 4 tbl