Process for producing hydrogen peroxide by direct synthesis

Details Process for producing hydrogen peroxide by direct synthesis Process for producing hydrogen peroxide by direct synthesis

1999-04-12

2000-09-12

Griffin, Steven P.

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

C01B 1501

Patent

active

061174092

ABSTRACT:
An aqueous solution of hydrogen peroxide is produced by direct synthesis from hydrogen and oxygen in the presence of a heterogeneous catalyst. According to the invention, a gas mixture comprising H.sub.2 and O.sub.2, essentially saturated or supersaturated with water (=containing fog) is fed into a reactor containing the catalyst. The volume ratio of the gas mixture fed in (standard liters per hour) to liquid removed (liters per hour) is adjusted to a value equal to or greater than 15,000, especially 20,000 to 50,000, and the gas mixture leaving the reactor is recycled after replenishment with H.sub.2, O.sub.2, and H.sub.2 O vapor. Solutions with high H.sub.2 O.sub.2 concentration can be obtained according to the invention without additional concentration.

REFERENCES:
patent: 4681751 (1987-07-01), Gosser
patent: 5169618 (1992-12-01), Maraschino

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