Process for the preparation of hydrogen peroxide
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsHiromitsu Nagashima, Yukio Ishiuchi, Yasushi Hiramatsu, Michiya Kawakami
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Abstract
Oxygen and hydrogen are catalytically reacted in an acidic reaction medium in the presence of a platinum group metal catalyst to prepare hydrogen peroxide using as a carrier for the platinum group metal catalyst a composite oxide containing cerium. The process need not halogen ions in the acidic reaction medium and enables preparation of hydrogen peroxide in high concentration on an industrial scale advantageously.
Claims18
A process for the preparation of hydrogen peroxide which comprises catalytically reacting oxygen with hydrogen in an acidic reaction medium in the presence of a platinum group metal catalyst, wherein a composite oxide consisting essentially of
- (i) cerium oxide;
- and
- (ii) at least one member selected from the group consisting of titanium oxide, zirconium oxide and lanthanum oxide;
- is used as a carrier for said platinum group metal catalyst.
A process for the preparation of hydrogen peroxide which comprises catalytically reacting oxygen with hydrogen in an aqueous acidic reaction medium which contains substantially no halogen ions and in the presence of a platinum group metal catalyst, wherein a composite oxide consisting essentially of
- (i) 1 to 90% by weight of cerium oxide;
- and
- (ii) a catalytically effective amount of at least one member selected form the group consisting of titanium oxide, zirconium oxide and lanthanum oxide
- is used as a carrier for said platinum group metal catalyst.
Dependencies are inferred from the claim text.