Catalyst composition for the production of syngas from methane, process therefore and process for CO
A catalyst for performing carbon dioxide reforming of methane to produce syngas, that includes cobalt, nickel and magnesium oxides disposed a support.
1. A CO 2 reforming supported catalyst, comprising oxides of cobalt, nickel, and magnesium disposed on a support comprising alumina, niobia, silica, tantalum oxide, tin oxide, titania, or a combination comprising at least one of the foregoing oxides; and a promoter, wherein the promoter is lanthanum or cerium, wherein the amount of the promoter is from more than 0.001 to less than 0.5 mol % relative to the supported catalyst.
2. The supported catalyst claim 1 , wherein the support has an average pore diameter of 5 to 13 nm.
3. The supported catalyst of claim 1 , wherein the supported catalyst has an average pore volume from 0.06 cm 3 /g to 0.5 cm 3 /g.
4. The supported catalyst of claim 1 , wherein the support is an alumina-silica support.
5. The supported catalyst of claim 1 , wherein no zirconia is present.
6. The supported catalyst of claim 1 , wherein the catalyst exhibits hydrogen selectivity equal to or greater than 97% in CO 2 reforming.
7. The supported catalyst of claim 1 , wherein the catalyst provides equal to or greater than 96% methane conversion in CO 2 reforming.
8. The supported catalyst of claim 1 , wherein the catalyst provides in equal to or greater than 91% carbon dioxide conversion in CO 2 reforming.
9. A process for the preparation of the CO 2 reforming supported catalyst of claim 1 , the process comprising:
combining a templating copolymer and a support precursor in a solvent to form a support solution;
dissolving salts comprising nickel, cobalt, and magnesium in a solvent to form a metal solution;
combining the support solution and the metal solution;
adding a promoter, wherein the promoter is lanthanum or cerium;
adding an acid to form a catalyst solution;
heating the catalyst solution at a temperature effective to form a solid catalyst mass;
grinding the solid catalyst mass into a powdered catalyst; and
calcining the powdered catalyst in the presence of oxygen to provide the CO 2 reforming supported catalyst.
10. The process of claim 9 , wherein the process further comprises subjecting the calcined, supported catalyst to a gas stream that comprises hydrogen to reduce the CO 2 reforming supported catalyst.
11. The process of claim 9 , wherein the support solution comprises an aluminum compound and a silica compound.
12. The process of claim 9 , wherein no zirconium compound is present.
13. A process for CO 2 reforming of lower alkanes to a synthesis gas comprising H 2 and CO, the process comprising
subjecting a feedstream of gaseous lower alkanes to CO 2 in the presence of the catalyst of claim 1 at a temperature and pressure effective to reform the CO 2 .
14. The process of claim 13 , wherein the feedstream of gaseous lower alkanes comprises methane.
15. The process of claim 13 , wherein the feedstream comprises a carbon dioxide:methane mole ratio of 1.1.
16. The process of claim 13 , wherein the synthesis gas comprises a H 2 :CO ratio from 0.95 to 1.0.
17. A CO 2 reforming supported catalyst, comprising oxides of cobalt, nickel, and magnesium disposed on a support, wherein the amount of magnesium is between 0.05 and 2.5 mol % relative to the supported catalyst and a promoter, wherein the promoter is lanthanum or cerium, wherein the amount of the promoter is from more than 0.001 to less than 0.5 mol % relative to the supported catalyst.
18. The supported catalyst of claim 17 , wherein the support comprises alumina, niobia, silica, tantalum oxide, tin oxide, titania, zirconia, or a combination comprising at least one of the foregoing oxides.
19. A process for the preparation of the CO 2 reforming supported catalyst of claim 18 , the process comprising:
providing a support comprising alumina, niobia, silica, tantalum oxide, tin oxide, titania, zirconia, or a combination comprising at least one of the foregoing oxides; and
impregnating the support with a solution comprising salts of nickel, cobalt, and magnesium;
adding a promoter, wherein the promoter is lanthanum or cerium;
drying the impregnated support; and
calcining the impregnated, dried support at a temperature above 500° C.
20. The process of claim 19 , wherein the process further comprises subjecting the calcined, supported catalyst to a gas stream that comprises hydrogen to reduce the CO 2 reforming supported catalyst.
21. The process of claim 19 , wherein the support comprises alumina-silica.
22. The process of claim 19 , wherein no zirconia is present in the support.
23. A CO 2 reforming supported catalyst, comprising a mixed metal oxide catalyst component of the formula NiCoMgO x disposed on a support; and a promoter, wherein the promoter is lanthanum or cerium, wherein the amount of the promoter is from more than 0.001 to less than 0.5 mol % relative to the supported catalyst.
24. The supported catalyst of claim 23 , wherein the support comprises alumina, niobia, silica, tantalum oxide, tin oxide, titania, zirconia, or a combination comprising at least one of the foregoing oxides.