US5139541A
Expired / Lapsed
US
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Hydrogen-permeable composite metal membrane
Assignee: ATI Properties LLC
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Filing: 1991-07-22
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Granted: 1992-08-18
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Expires: 2011-07-22
Abstract
Abstract Composite metal membranes are disclosed that contain an intermetallic diffusion barrier separating a hydrogen-permeable base metal and a hydrogen-permeable coating metal. The barrier is a thermally stable inorganic proton conductor.
Inventors
- 👤 David J. Edlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:26
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/02; B01D71/022; B01D71/0227; B01D53/00; B01D53/22; B01D53/228; B01D67/00; B01D67/0039; B01D67/0072; C; C01; C01B; C01B3/00; C01B3/02; C01B3/04; C01B3/06; C01B3/12; C01B3/32; C01B3/34; C01B3/50; C01B3/501; C01B3/503; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C5/00; C07C5/32; C23; C23C; C23C28/00; C23C28/30; C23C28/32; C23C28/321; C23C28/322; C23C28/325; C23C28/34; C23C28/345; C23C28/3455; B01D2323/00; B01D2323/08; B01D2323/081; B01D2323/10; B01D2325/00; B01D2325/26; B01J; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00105; B01J2219/00108; B01J2219/00159; B01J2219/24; B01J2219/2401; B01J2219/245; B01J2219/2451; B01J2219/2453; B01J2219/2475; B01J2219/2476; B01J2219/2483; B01J2219/2485; B01J2219/2487; B01J2219/2491; B01J2219/2492; B01J2219/2493; B01J2219/2498; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/047; C01B2203/0475; C01B2203/048; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
66 words
A nonporous composite metal membrane comprising a hydrogen-permeable base metal and a hydrogen-permeable coating metal characterized in that said base metal and said coating metal are separated by a barrier which prevents intermetallic diffusion between said base metal and said coating metal at a temperature of at least 500° C., said barrier comprising an inorganic proton conductor other than pure metal or a pure metal alloy.
Claim 2
Dependent Claim
66 words
A nonporous composite metal membrane comprising a hydrogen-permeable base metal and a hydrogen-permeable coating metal characterized in that said base metal and said coating metal are separated by a barrier which prevents intermetallic diffusion between said base metal and said coating metal at a temperature of at least 500° C., said barrier comprising an inorganic proton conductor other than pure metal or a pure metal alloy.
Claim 3
Dependent Claim
31 words
The metal membrane of claim 1 wherein said barrier is selected from the group consisting essentially of oxides of molybdenum, silicon, tungsten and vanadium, and sulfides of molybdenum, tungsten and vanadium.
Claim 4
Dependent Claim
36 words
The metal membrane of claim 1 wherein said base metal is selected from hydrogen-permeable transition metals from Groups IIIB, IVB, VB, VIIB and VIIIB of the periodic table and alloys containing ≧20 wt% of said metals.
Claim 5
Dependent Claim
35 words
The metal membrane of claim 1 wherein said coating metal is selected from a hydrogen-permeable transition metal and alloy thereof, said coating metal being chemically and physically stable at temperatures of at least 500° C.
Claim 6
Dependent Claim
38 words
The metal membrane of claim 4 wherein said coating metal is selected from the group consisting essentially of the transition metals from Groups VIIB and VIIIB of the periodic table, and alloys containing ≧20 wt% of said metals.
Claim 7
Dependent Claim
25 words
The metal membrane of claim 5 wherein said coating metal is selected from the group consisting essentially of Fe, Mn, Ni, Pd, Pt and Ru.
Claim 8
Dependent Claim
12 words
The metal membrane of claim 1 wherein said barrier is molybdenum oxide.
Claim 9
Dependent Claim
12 words
The metal membrane of claim 1 wherein said barrier is silicon dioxide.
Claim 10
Dependent Claim
12 words
The metal membrane of claim 1 wherein said barrier is tungsten oxide.
Claim 11
Dependent Claim
12 words
The metal membrane of claim 1 wherein said barrier is vanadium oxide.
Claim 12
Dependent Claim
12 words
The metal membrane of claim 1 wherein said barrier is vanadium sulfide.
Claim 13
Dependent Claim
27 words
The metal membrane of claim 1 wherein said base metal is vanadium and said coating metal is an alloy comprising 20 wt% nickel and 80 wt% copper.
Claim 14
Dependent Claim
18 words
The metal membrane of claim 1 wherein said base metal is vanadium and said coating metal is palladium.
Claim 15
Dependent Claim
18 words
The metal membrane of claim 1 wherein said base metal is vanadium and said coating metal is nickel.
Claim 16
Dependent Claim
42 words
A method for separating hydrogen from other gases comprising contacting a gaseous feed stream containing hydrogen at a temperature of at least 500° C. with the metal membrane of claim 1 or 2 and separating hydrogen that permeates through said metal membrane.
References Cited (Backward Citations)
US3393098A
Cited
US4388479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |