Low-temperature hydrogen production from oxygenated hydrocarbons
AssigneeWisconsin Alumni Research Foundation
InventorsRandy D. Cortright, James A. Dumesic
Life of this patent
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Abstract
Disclosed is a method of producing hydrogen from oxygenated hydrocarbon reactants, such as glycerol, glucose, or sorbitol. The method can take place in the vapor phase or in the condensed liquid phase. The method includes the steps of reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst. The catalyst contains a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof. The disclosed method can be run at lower temperatures than those used in the conventional steam reforming of alkanes.
Claims47
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, at a temperature not greater than about 400° C., at a pressure where the water and the oxygenated hydrocarbon remain condensed liquids, and in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, and wherein the water-soluble oxygenated hydrocarbon is selected from the group consisting of ethanediol, ethanedione, glycerol, glyceraldehyde, aldotetroses, aldopentoses, aldohexoses, ketotetroses, ketopentoses, ketohexoses and alditols.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, at a temperature of not greater than about 400° C., and at a pressure where the water and the oxygenated hydrocarbon remain condensed liquids, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, the catalyst being adhered to a support.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, and wherein the catalyst is adhered to a support comprising a carbon nanotube or a carbon fullerene.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, and wherein the catalyst is adhered to a support comprising a nanoporous support.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, and wherein the water and the oxygenated hydrocarbon are reacted at a temperature not greater than about 400° C., at a pressure where the water and the oxygenated hydrocarbon remain condensed liquids, and further comprising reacting the water and the water-soluble hydrocarbon in the presence of a water-soluble salt of an alkali or alkali earth metal.
A method of producing hydrogen comprising:
- reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, at a temperature of from about 100° C. to about 450° C., and at a pressure where the water and the oxygenated hydrocarbon are gaseous, in the presence of a metal-containing catalyst, wherein the catalyst comprises a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof, the catalyst being adhered to a support, and wherein the water-soluble oxygenated hydrocarbon is selected from the group consisting of ethanediol, ethanedione, glycerol, glyceraldehyde, aldotetroses, aldopentoses, ketotetroses, ketopentoses, ketohexoses, and alditols.
Dependencies are inferred from the claim text.