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US 2003/0165424 A1Published application
Promoted nickel-magnesium oxide catalysts and process for producing synthesis gas
AssigneeConoco Inc.
InventorsSriram Ramani, Joe D. Allison, David M. Minahan, Harold A. Wright
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Abstract
A process and catalyst are disclosed for the catalytic partial oxidation of light hydrocarbons to produce synthesis gas at superatmospheric pressures. A preferred catalyst used in the process includes a nickel-magnesium oxide solid solution and at least one promoter chosen from Cr, Mn, Mo, W, Sn, Re, Rh, Ru, Ir, Pt, La, Ce, Sm, Yb, Lu, Bi, Sb, In and P, and oxides thereof, carried on a refractory support.
Claims50
A method of converting a light hydrocarbon and O2 to a product mixture containing CO and H2, the process comprising:
- forming a reactant gas mixture comprising a light hydrocarbon and O2;
- and
- passing said reactant gas mixture over a catalyst comprising
- at least one promoter chosen from the group consisting of Cr, Mn, Mo, W, Sn, Re, Rh, Pd, Ru, Ir, Pt, La, Ce, Sm, Yb, Lu, Bi, Sb, In and P, and oxides thereof;
- a solid solution comprising nickel and/or nickel oxide and magnesium oxide;
- and
- a refractory support,
- said catalyst having enhanced stability and enhanced resistance to coking under catalytic partial oxidation promoting conditions,
- such that a product mixture containing CO and H2 is produced.
6 more elements
A syngas catalyst prepared by a process comprising:
- impregnating a refractory metal oxide support with a decomposable magnesium oxide precursor compound;
- thermally conditioning said magnesium impregnated support such that said magnesium oxide precursor compound decomposes and a magnesium oxide impregnated support is obtained;
- impregnating said magnesium impregnated support with a decomposable nickel and/or nickel oxide precursor compound to provide a nickel and magnesium containing intermediate;
- thermally conditioning said nickel and magnesium containing intermediate such that said nickel and/or nickel oxide precursor compound decomposes and a nickel and/or nickel oxide, magnesium oxide containing intermediate is obtained;
- impregnating said nickel and/or nickel oxide, magnesium oxide containing intermediate with at least one decomposable promoter precursor compound, said promoter chosen from the group consisting of Cr, Mn, Mo, W, Sn, Re, La, Ce, Sm, Yb, Lu, Bi, Sb, In and P, to provide a promoter-1, nickel and/or nickel oxide, magnesium oxide containing intermediate;
- thermally conditioning said promoter-1, nickel and/or nickel oxide, magnesium oxide containing intermediate;
- optionally, impregnating said promoter-1, nickel and/or nickel oxide, magnesium oxide containing intermediate with another decomposable promoter precursor compound, said other promoter chosen from the group consisting of Pt, Rh, Ru, Ir and Pd, to provide a promoter-2, promoter-1, nickel and/or nickel oxide, magnesium oxide containing intermediate, and thermally conditioning said promoter-2, promoter-1, nickel and/or nickel oxide, magnesium oxide containing intermediate;
- and
- optionally, reducing said catalyst,
- to provide a catalyst having activity for catalyzing the partial oxidation of methane to form CO and H2.
7 more elements
Dependencies are inferred from the claim text.