Catalyst, process for the production of hydrogen peroxide and its use in oxidation processes
AssigneeEnichem S.p.A.
InventorsGiuseppe Paparatto, Rino D'Aloisio, Giordano De Alberti, Piero Furlan, Vittorio Arca, Roberto Buzzoni, Laura Meda
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Abstract
The present invention relates to a catalyst consisting of a metal of the VIII group supported on acid activated carbon functionalized with sulfonic groups, a process for the synthesis of hydrogen peroxide from hydrogen and oxygen which uses said catalyst and the use of the hydrogen peroxide solution in oxidation processes catalyzed by titanium-silicalite.
Claims38
A catalyst consisting essentially of a metal belonging to group VIII supported on a carrier, wherein Raid carrier is an activated carbon functionalized with sulfonic groups.
A process for directly producing hydrogen peroxide, which comprises reacting hydrogen and oxygen in a solvent which contains a promoter in the presence of a catalyst consisting essentially of a metal of group VIII supported on a carrier, wherein said carrier is an activated carbon functionalized with sulfonic groups.
A process for catalytic oxidation of substrates, which comprises:
- (a) preparing hydrogen peroxide by reacting hydrogen and oxygen in a solvent containing a promoter, in the presence of a catalyst consisting essentially of a metal of group VIII supported on activated carbon functionalized with sulfonic groups;
- (b) recovering the reaction mixture containing hydrogen peroxide;
- (c) contacting the reaction mixture containing hydrogen peroxide with a substrate selected from the group consisting of olefins, aromatic hydrocarbons, ammonia and carbonyl compounds, in the presence of a catalyst comprising titanium-silicalite to obtain an oxidated product;
- (d) recovering the oxidized product from the reaction mixture of step c);
- and
- (e) recycling non-reacted substrate in step c) and the reaction solvent in steps a) and c).
The process of clam 35, wherein the titanium-silicalites with an MFI structure are modified with trivalent metals selected from the group consisting of aluminum, iron, boron and gallium.
Dependencies are inferred from the claim text.