METHOD AND CATALYST FOR PREPARING HYDROGEN PEROXIDE Russian patent published in 1999 - IPC

FIELD: inorganic syntheses. SUBSTANCE: hydrogen peroxide is prepared by direct reaction of hydrogen with oxygen in an aqueous medium on suspended catalyst. Catalyst carrier is porous silica, alumina, or non-fluoridated carbon with BET surface 10 to 150 sq.m/g, wherein volume of pores with diameter above 10 nm constitutes 50% of the total pore volume. Catalytically-active material, precipitated on carrier, is at least one VII group precious metal or gold with specific surface 25 to 500 sq.m/g. Advantageously, palladium and/or platinum are utilized. With such catalyst, selectivity of reaction is 69-73%, one-hour productivity 7.4-8.5 g of SiO₂,Al₂O₃ in 1 l, and average final concentration of H₂O₂ 7.6-8.5 wt %. EFFECT: increased selectivity and activity of catalyst. 10 cl, 1 tbl