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US 6,958,310 B2Granted
Catalyst and method of steam reforming
AssigneeBattelle Memorial Institute
InventorsYong Wang, Anna Lee Y. Tonkovich, David P. Vanderwiel
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Abstract
A method of steam reforming a hydrocarbon over a spinel-containing catalyst at short residence times or short contact times. The present invention also provides spinel-containing catalysts. Surprisingly superior results and properties obtained in methods and catalysts of the present invention are also described.
Claims27
A catalyst, comprising:
- (a) a first porous structure comprising a first pore surface area and a first pore size of at least about 0.1 μm;
- (b) a porous interfacial layer that comprises a spinel comprising a second pore surface area and a second pore size less than said first pore size, wherein said porous interfacial layer has a thickness less than 4 mm disposed upon said porous structure;
- (c) a steam reforming catalyst selected from the group consisting of rhodium, iridium, nickel, palladium, platinum, ruthenium, carbide of group VIb and combinations thereof disposed upon the second pore surface area.
A catalyst comprising:
- an alumina layer;
- a metal exposed on the surface of the catalyst;
- a spinel layer disposed between the alumina layer and the metal;
- wherein the spinel layer is in direct contact with the alumina layer;
- and wherein the metal comprises a metal selected from the group consisting of:
- rhodium, iridium, nickel, platinum, palladium, and ruthenium;
- and
- wherein the spinel layer has a thickness of less than 40 microns.
5 more elements
A catalyst comprising:
- an alumina layer;
- a metal exposed on the surface of the catalyst;
- a spinel layer disposed between the alumina layer and the metal;
- wherein the spinel layer is in direct contact with the alumina layer;
- and
- wherein the metal comprises a metal selected from the group consisting of rhodium iridium, nickel, platinum, palladium, and ruthenium;
- and
- further comprising a magnesia layer wherein the spinel layer is disposed between the magnesia layer and the alumina layer and said metal is disposed on the magnesia layer.
5 more elements
Dependencies are inferred from the claim text.