Patent US4810485A successfully refreshed from Google Patents.
US4810485A
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Hydrogen forming reaction process
Assignee: Gas Technology Institute
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Filing: 1987-10-23
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Granted: 1989-03-07
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Expires: 2007-10-23
Abstract
Abstract A hydrogen forming process and apparatus wherein one side of a hydrogen ion porous and molecular gas non-porous metallic foil is contacted with mixed gases comprising molecular hydrogen formed by a chemical reaction in a hydrogen production zone. The molecular hydrogen is dissociated and passed as ionic hydrogen to the other side of the metallic foil from which it is withdrawn, thereby removing hydrogen from the hydrogen production zone. This invention is particularly advantageous in favorably shifting the equilibrium of steam/methane reforming reactions and water-gas-shift reactions providing high yields of high purity hydrogen.
Inventors
- 👤 Leonard G. Marianowski
- 👤 Donald K. Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9041; H01M4/8605; H01M4/8626; H01M8/00; H01M8/06; H01M8/0606; H01M8/0612; H01M8/0625; H01M8/14; H01M8/141; H01M8/142; H01M2004/8678; H01M2004/8684; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M4/8647; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
89 words
A hydrogen forming process comprising: conducting in a hydrogen production zone a chemical reaction forming mixed gases comprising molecular hydrogen; contacting one side of a hydrogen ion porous and molecular gas nonporous metallic foil with said mixed gases in said hydrogen production zone; dissociating said molecular hydrogen to ionic hydrogen on said one side of said metallic foil; passing said ionic hydrogen through said metallic foil to its other side; and withdrawing hydrogen from said other side of said metallic foil, thereby removing hydrogen from said hydrogen production zone.
Claim 2
Dependent Claim
89 words
A hydrogen forming process comprising: conducting in a hydrogen production zone a chemical reaction forming mixed gases comprising molecular hydrogen; contacting one side of a hydrogen ion porous and molecular gas nonporous metallic foil with said mixed gases in said hydrogen production zone; dissociating said molecular hydrogen to ionic hydrogen on said one side of said metallic foil; passing said ionic hydrogen through said metallic foil to its other side; and withdrawing hydrogen from said other side of said metallic foil, thereby removing hydrogen from said hydrogen production zone.
Claim 3
Dependent Claim
39 words
A hydrogen forming process of claim 1 wherein said metallic foil is selected from the group consisting of palladium, nickel, cobalt, iron, ruthenium, rhodium, osmium, iridium, platinum, titanium, zirconium, hafnium, vanadium, niobium, tantalum, copper, silver, gold and mixtures thereof.
Claim 4
Dependent Claim
23 words
A hydrogen forminq process of claim 1 wherein said metallic foil is selected from the group consisting of copper, nickel, and mixtures thereof.
Claim 5
Dependent Claim
19 words
A hydrogen forming process of claim 1 wherein said metallic foil is about 0.0001 to about 0.001 inch thick.
Claim 6
Dependent Claim
19 words
A hydrogen forming process of claim 1 wherein said metallic foil is about 0.0001 to about 0.0005 inch thick.
Claim 7
Dependent Claim
33 words
A hydrogen forming process of claim 1 wherein said metallic foil has a mechanical support selected from the group consisting of perforated metal, expanded metal, porous metal, and porous ceramic, and mixtures thereof.
Claim 8
Dependent Claim
33 words
A hydrogen forming process of claim 1 wherein said metallic foil is in the form of a plurality of tubes within said hydrogen production zone and having a manifold at a withdrawal end.
Claim 9
Dependent Claim
21 words
A hydrogen forming process of claim 1 wherein said hydrogen production zone is maintained at about 1000° to about 1400° F.
Claim 10
Dependent Claim
20 words
A hydrogen forming process of claim 1 wherein said chemical reaction comprises a steam/methane reforming reaction: CH.sub.4 +2H.sub.2 O→CO.sub.2 +4H.sub.2.
Claim 11
Dependent Claim
18 words
A hydrogen forming process of claim 1 wherein said chemical reaction comprises a water-gas-shift reaction: CO+H.sub.2 O→CO.sub.2 +H.sub.2.
Claim 12
Dependent Claim
53 words
A hydrogen forming process of claim 1 wherein said metallic foil is nickel about 0.001 to about 0.0001 inch thick in the form of a plurality of tubes within said hydrogen production zone and having a manifold at a withdrawal end, said hydrogen production zone maintained at about 1000° to about 1400° F.
Claim 13
Dependent Claim
79 words
In a hydrogen forming process wherein a chemical reaction forming mixed gases comprising hydrogen is conducted in a hydrogen production zone, the improvement comprising: contacting one side of a hydrogen ion porous and molecular gas non-porous metallic foil with said mixed gases in said hydrogen production zone, passing hydrogen as hydrogen ions through said metallic foil to its other side, and withdrawing hydrogen from said other side of said metallic foil thereby removing hydrogen from said hydrogen production zone.
Claim 14
Dependent Claim
79 words
In a hydrogen forming process wherein a chemical reaction forming mixed gases comprising hydrogen is conducted in a hydrogen production zone, the improvement comprising: contacting one side of a hydrogen ion porous and molecular gas non-porous metallic foil with said mixed gases in said hydrogen production zone, passing hydrogen as hydrogen ions through said metallic foil to its other side, and withdrawing hydrogen from said other side of said metallic foil thereby removing hydrogen from said hydrogen production zone.
Claim 15
Dependent Claim
40 words
In a hydrogen forming process of claim 12 wherein said metallic foil is selected from the group consisting of palladium, nickel, cobalt, iron, ruthenium, rhodium, osmium, iridium, platinum, titanium, zirconium, hafnium, vanadium, niobium, tantalum, copper, silver, gold and mixtures thereof.
Claim 16
Dependent Claim
24 words
In a hydrogen forming process of claim 12 wherein said metallic foil is selected from the group consisting of copper, nickel, and mixtures thereof.
Claim 17
Dependent Claim
19 words
In a hydrogen forming process of claim 12 wherein said metallic foil is about 0.0001 to about 0.001 inch.
Claim 18
Dependent Claim
20 words
In a hydrogen forming process of claim 12 wherein said metallic foil is about 0.0001 to about 0.0005 inch thick.
Claim 19
Dependent Claim
34 words
In a hydrogen forming process of claim 12 wherein said metallic foil has a mechanical support selected from the group consisting of perforated metal, expanded metal, porous metal, and porous ceramic, and mixtures thereof.
Claim 20
Dependent Claim
34 words
In a hydrogen forming process of claim 12 wherein said metallic foil is in the form of a plurality of tubes within said hydrogen production zone and having a manifold at a withdrawal end.
Claim 21
Dependent Claim
22 words
In a hydrogen forming process of claim 12 wherein said hydrogen production zone is maintained at about 1000° to about 1400° F.
Claim 22
Dependent Claim
21 words
In a hydrogen forming process of claim 12 wherein said chemical reaction comprises a steam/methane reforming reaction: CH.sub.4 +2H.sub.2 O→CO.sub.2 +4H.sub.2.
Claim 23
Dependent Claim
19 words
In a hydrogen forming process of claim 12 wherein said chemical reaction comprises a water-gas-shift reaction: CO+H.sub.2 O→CO.sub.2 +H.sub.2.
Claim 24
Dependent Claim
54 words
In a hydrogen forming process of claim 12 wherein said metallic foil is nickel about 0.001 to about 0.0001 inch thick in the form of a plurality of tubes within said hydrogen production zone and having a manifold at a withdrawal end, said hydrogen production zone maintained at about 1000° to about 1400° F.
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