초록 ▼

A new family of oxidative dehydrogenation catalysts having MCrAlY supports can be used in the production of olefins. Olefins are produced by heating a feed stream comprising at least an alkane and an oxidant to a temperature between 25° C. and 800° C.; contacting the feed stream with a cat

A new family of oxidative dehydrogenation catalysts having MCrAlY supports can be used in the production of olefins. Olefins are produced by heating a feed stream comprising at least an alkane and an oxidant to a temperature between 25° C. and 800° C.; contacting the feed stream with a catalyst comprising an MCrAlY structure and, optionally, a Group VIII promoter metal coating, wherein M is a base metal, or combination of base metals; and maintaining a contact time of the alkane with the catalyst of less than 200 milliseconds under conditions sufficient to achieve oxidative dehydrogenation of the alkane. M may comprise a metal selected from the group consisting of Group IB-VIIB metals, Group IIIA-VA metals, lanthanide metals, iron, cobalt, nickel, and combinations thereof. More particularly, M may comprise a metal selected from the group consisting Tb, Sm, Pr, Fe, Ni, Co, and combinations thereof.

대표청구항 ▼

1. A method for the production of olefins comprising:a) heating a feed stream comprising at least an alkane and an oxidant to a temperature of between approximately 25° C. and 800° C.;b) contacting the feed stream with a catalyst comprising an MCrAlY structure, wherein M is a base metal, o

1. A method for the production of olefins comprising:a) heating a feed stream comprising at least an alkane and an oxidant to a temperature of between approximately 25° C. and 800° C.;b) contacting the feed stream with a catalyst comprising an MCrAlY structure, wherein M is a base metal, or combination of base metals; andc) maintaining a contact time of the feed stream with the catalyst of less than 200 milliseconds under conditions sufficient to achieve oxidative dehydrogenation of the alkane. 2. The method of claim 1 wherein the catalyst further includes a Group VIII promoter metal coating. 3. The method of claim 1 wherein the oxidant comprises a molecular oxygen-containing gas. 4. The method of claim 3 wherein the molecular oxygen-containing gas is air, oxygen-enriched air, or pure oxygen. 5. The method of claim 1 wherein the alkane comprises at least one paraffin with a carbon number between 2 and 10. 6. The method of claim 1 wherein M comprises a metal selected from the group consisting of Group IB-VIIB metals, Group III-VA metals, lanthanide metals, iron, cobalt, nickel, and combinations thereof. 7. The method of claim 6 wherein M comprises a metal selected from the group consisting Tb, Sm, Pr, Fe, Ni, Co, and combinations thereof. 8. The method of claim 1 wherein the feed stream comprises gaseous hydrocarbons. 9. The method of claim 8 wherein the catalyst further includes a Group VIII promoter metal coating. 10. The method of claim 9 wherein the oxidant is comprises a molecular oxygen-containing gas. 11. The method of claim 10 wherein the molecular oxygen-containing gas is air, oxygen-enriched air, or pure oxygen. 12. The method of claim 8 wherein the alkane comprises at least one paraffin with a carbon number between 2 and 10. 13. The method of claim 8 wherein M comprises a metal selected from the group consisting of Group IB-VIIB metals, Group IIIA-VA metals, lanthanide metals, iron, cobalt, nickel, and combinations thereof. 14. The method of claim 13 wherein M comprises a metal selected from the group consisting Tb, Sm, Pr, Fe, Ni, Co, and combinations thereof. 15. A method for the production of olefins comprising:a) heating a feed stream comprising at least an alkane and an oxidant to a temperature of between approximately 25° C. and 800° C.; andb) contacting the feed stream with a catalyst comprising an MCrAlY structure, wherein M is a base metal, or combination of base metals. 16. The method of claim 1 wherein the catalyst further includes a Group VIII promoter metal. 17. The method of claim 1 wherein the oxidant comprises a molecular oxygen-containing gas. 18. The method of claim 3 wherein the molecular oxygen-containing gas is air, oxygen-enriched air, or pure oxygen. 19. The method of claim 1 wherein the alkane comprises at least one paraffin with a carbon number between 2 and 10. 20. The method of claim 1 wherein M comprises a metal selected from the group consisting of Group IB-VIIB metals, Group IIIA-VA metals, lanthanide metals, iron, cobalt, nickel, and combinations thereof. 21. The method of claim 6 wherein M comprises a metal selected from the group consisting Tb, Sm, Pr, Fe, Ni, Co, and combinations thereof.