IP Library › Granted Patent US 7,718,158
Granted Patent B2
US 7,718,158 · App. 11/249,241 · Granted May 18, 2010

Polymer-encapsulated ion-exchange resin

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Quick Facts
Patent No.
US 7,718,158
App. No.
11/249,241
Granted
May 18, 2010
Kind
B2
Abstract

Polymer-encapsulated ion-exchange resins are disclosed. The resins are useful in adsorption, catalysis, and other applications. Catalysts comprising a polymer-encapsulated combination of an ion-exchange resin and a transition metal are also disclosed. The catalysts are useful in hydrogenation, oxidation, hydroformylation, polymerization, and other valuable processes. Certain of the polymer-encapsulated catalysts enhance the productivity in the process for producing hydrogen peroxide from hydrogen and oxygen.

Claims (13)

1. A catalyst comprising a polymer-encapsulated combination of a transition metal and a sulfonic acid polystyrene resin.

2. The catalyst of claim 1 wherein the transition metal is selected from the group consisting of rhenium, iron, ruthenium, cobalt, rhodium, iridium, nickel, palladium, platinum, silver, gold, and mixtures thereof.

3. The catalyst of claim 1 wherein the transition metal is selected from the group consisting of rhenium, palladium, platinum, silver, gold, and mixtures thereof.

4. The catalyst of claim 1 wherein the transition metal is palladium.

5. The catalyst of claim 1 wherein the polymer is selected from the group consisting of polystyrenics, polyolefins, and mixtures thereof.

6. The catalyst of claim 1 wherein the polymer is polystyrene.

7. A process for producing hydrogen peroxide, which comprises reacting hydrogen and oxygen in a solvent in the presence of the catalyst of claim 1 .

8. The process of claim 7 wherein the transition metal is selected from the group consisting of rhenium, palladium, platinum, silver, gold, and mixtures thereof.

9. The process of claim 7 wherein the transition metal is palladium.

10. The process of claim 7 wherein the polymer is selected from the group consisting of polystyrenics, polyolefins, and mixtures thereof.

11. The process of claim 7 wherein the catalyst further comprises a support component.

12. The process of claim 7 wherein the solvent is selected from the group consisting of alcohols, ethers, esters, ketones, carbon dioxide, water, and mixtures thereof.

13. The process of claim 7 wherein the reaction is performed in the presence of a hydrogen peroxide stabilizer.