Carbon monoxide conversion catalysts

• US 3,899,577 A
• Filed: 10/02/1973
• Issued: 08/12/1975
• Est. Priority Date: 07/25/1969
• Status: Expired due to Term

• Current Assignee: Andre Sugier
• Original Assignee: Andre Sugier
• Inventors: Sugier, Andre
• Primary Examiner(s): Stern, Edward
• Application Number:
  US05/402,762
• Time in Patent Office: 679 Days
• Field of Search: 423/656,437
• US Class Current: 423/656
• CPC Class Codes: B01J 23/005 Spinels
• CPC Class Codes: B01J 23/72 Copper
• CPC Class Codes: B01J 23/74 Iron group metals
• CPC Class Codes: B01J 23/84 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• CPC Class Codes: B01J 23/868 copper and chromium
• CPC Class Codes: B01J 23/8892 Manganese
• CPC Class Codes: C01B 3/16 using catalysts
• CPC Class Codes: Y02P 20/52 using catalysts, e.g. selective catalysts

Abstract

This invention relates to a catalyst, to a process for the manufacture thereof and to a process for manufacturing hydrogen by reacting carbon monoxide with water at 150* - 550*C in the presence of the above catalyst. This catalyst comprises an active phase consisting of the mixed oxides of (a) copper and (b) a trivalent metal selected from aluminum, chromium, manganese, iron and cobalt, at least 60 percent by weight of said mixed oxides having a spinel structure. The catalyst is manufactured by admixing the catalyst components in solution with a heatdecomposable complexing organic compound or with a heatdecomposable gel-forming compound, the solvent being evaporated thereafter and the mixture being finally roasted at a temperature of at least 200*C.

Claims

1. A PROCESS FOR MANUFACTURING HYDROGEN BY REACTING CARBON MONOXIDE WITH STEAM AT A TEMPERATURE OF FROM 150* TO 450*C AND IN THE PRESENCE OF A CATALYST COMPRISING A MIXED OXIDE OF (A) COPPER AND (B) AT LEAST ONE TRIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, CHROMIUM, MANGANESE, IRON AND COBALT, AT LEAST 60% BY WEIGHT OF SAID MIXED OXIDE HAVING A SPINEL STRUCTURE.

2. A process as claimed by claim 1 wherein more than two metal elements are present in said mixed oxide.

3. A process as claimed by claim 1 wherein said mixed oxide essentially has the spinel structure.

4. A process as claimed by claim 1 said mixed oxide further comprising at least one bivalent metal selected from the group consisting of magnesium, cobalt and cadmium.

5. A process as claimed by claim 4, wherein said mixed oxide essentially has the spinel structure.

6. A process as claimed in claim 1 wherein said catalyst is a sHaped particulate agglomerated catalyst consisting essentially of said mixed oxide.

7. A process as claimed by claim 6, wherein said mixed oxide essentially has the spinel structure.

8. A process as claimed by claim 4, wherein said catalyst is a shaped particulate agglomerated catalyst consisting essentially of said mixed oxide.

9. A process as claimed by claim 8, wherein said mixed oxide essentially has the spinel structure.

10. A process as claimed by claim 1, wherein said catalyst consists essentially of particulate carrier material impregnated with said mixed oxide.

11. A process as claimed by claim 10, wherein said mixed oxide essentially has the spinel structure.

12. A process as claimed by claim 4, wherein said catalyst consists essentially of particulate carrier material impregnated with said mixed oxide.

13. A process as claimed by claim 12, wherein said mixed oxide essentially has the spinel structure.

14. A process according to claim 1, wherein said catalyst is produced by a process comprising forming a solution containing (a) a dissolved copper compound selected from the group consisting of salts and hydroxides thereof and (b) a dissolved compound of a trivalent metal selected from the group consisting of aluminum, chromium, manganese, iron and cobalt, said compound being a salt, anhydride, acid or hydroxide;

admixing to said solution a thermally decomposable gel-forming compound to obtain a homogeneous and transparent gel;

heating the resultant gel up to at least 200*C to decompose the same and form a finely divided powder of a mixed oxide having at least 60% by weight of the spinel structure; and

shaping said finely divided powder to agglomerate.

15. A process according to claim 1, wherein said catalyst is produced by a process comprising contacting said carrier with a thermally decomposable gel-forming compound or complexing aliphatic hydroxy carboxylic acid and a solution of (a) a dissolved copper compound selected from the group consisting of salts and hydroxides thereof and (b) a dissolved compound of a trivalent metal selected from the group consisting of aluminum, chromium, manganese, iron and cobalt, said compound being a salt, anhydride, acid, or hydroxide, evaporating solvent from the thus impregnated carrier, and heating the carrier up to at least 200*C to obtain a supported catalyst having a active phase of mixed oxide having at least 60% by weight of a spinel structure.

16. A process according to claim 1, wherein said catalyst is produced by a process comprising forming a solution containing (a) a dissolved copper compound selected from the group consisting of salts and hydroxides thereof and (b) a dissolved compound of a trivalent metal selected from the group consisting of aluminum, chromium, manganese, iron and cobalt, said compound being a salt, anhydride, acid or hydroxide;

admixing to said soalution a thermally-decomposable complex-forming aliphatic hydroxy carboxylic acid, and concentrating the resulting solution to form a concentrate which is either viscous, homogeneous liquid or an amorphous solid;

heating said concentrate up to at least 200*C. to decompose the same and form a finely divided powder of a mixed oxide having at least 60 percent by weight of the spinel structure; and

shaping said finely divided powder to agglomerate.

17. A process as defined by claim 14, said solution further containing a dissolved compound of a divalent metal selected from the group consisting of magnesium, cobalt and cadmium.

18. A process as defined by claim 15, said solution further containing a dissolved compound of a divalent metal selected from the group consisting of magnesium, cobalt and cadmium.

19. A process as defined by claim 16, said solution further containing a dissolved compound of a divalent metal selected from the group consisting of magnesium, cobalt and cadmium.