Methods for the preparation of catalysts for hydrogen generation
OwnerAlfred Hagemeyer, Christopher James Brooks +3inventors
InventorsAlfred Hagemeyer, Christopher James Brooks, Raymond E. Carhart, Karin Yaccato, Andreas Lesik
Life of this patent
Estimating the term…
Abstract
The invention relates to methods of depositing platinum, vanadium and cobalt on a surface. The invention also relates to preparation of platinum- and sodium-containing catalysts. More particularly, the invention includes methods of preparing both precious metal- and non-precious metal-containing catalysts for the generation of a hydrogen-rich gas from gas mixtures containing carbon monoxide and water, such as water-containing syngas mixtures.
Claims44
A method of depositing platinum comprising:
- (a) applying a solution of a platinum salt to a surface;
- (b) applying an acid, an acid salt, or a base, to the surface;
- and
- (c) reacting the solution with the acid, acid salt, or base to precipitate a Pt-containing material and to form a Pt-containing coating on the surface.
A method of depositing platinum comprising:
- (a) applying a solution of a platinum salt to a surface;
- (b) applying an hydroxide solution to the surface;
- and
- (c) reacting the solution of a platinum salt with the hydroxide solution to precipitate a platinum hydroxide-containing material and to form a platinum hydroxide-containing coating on the surface;
- (c) washing the platinum hydroxide-containing coating with a solvent;
- and
- (d) reacting the platinum hydroxide-containing coating with a reducing agent at a temperature of from about 150° C. to about 350° C.
A method of preparing a catalyst comprising:
- impregnating a surface with a non-sodium-containing component of a catalyst composition;
- heating the surface to from about 250° C. to about 500° C.;
- impregnating the surface with a sodium-containing component of a catalyst composition;
- and
- heating the surface to from about 200° C. to about 400° C.
A method of preparing a catalyst comprising:
- impregnating all non-platinum- and non-sodium-containing components of the catalyst composition onto a surface;
- impregnating platinum- and sodium-containing precursors to the surface;
- forming a platinum- and sodium-containing catalyst material on the surface;
- and
- calcining the surface at a temperature of about 200° C. to about 400° C.
A method of preparing a platinum- and sodium-containing catalyst comprising:
- impregnating all non-platinum- and non-sodium-containing components of the catalyst composition onto a surface to form a first surface;
- impregnating a platinum-containing solution to the first surface to form a platinum-containing surface;
- calcining the platinum-containing surface to form a calcined platinum-containing coating;
- impregnating a sodium-containing solution to the calcined platinum-containing coating to form a second surface;
- and
- drying the second surface.
A method of depositing cobalt on a surface, comprising
- applying a cobalt(+3)-containing salt to a surface;
- and
- calcining the surface at a temperature of no greater than about 425° C.
A method of producing a support material comprising
- contacting a zirconia-containing material with one or more stabilizers to produce a zirconia-stabilizer-containing material;
- heating the zirconia-stabilizer-containing material to produce a stabilized zirconia support material.
Dependencies are inferred from the claim text.