US4536196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated diffusion membrane and its use
Assignee: Phillips Petroleum Co
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Filing: 1982-03-16
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Granted: 1985-08-20
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Expires: 2002-03-16
Abstract
Abstract A palladium or palladium alloy is coated with a metal, e.g., titanium, and employed for diffusion of hydrogen.
Inventors
- 👤 Jesse R. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:26
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; B; B01; B01D; B01D53/00; B01D53/22; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/048
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
A process for the dehydrogenation of a hydrocarbon comprising effecting, in the presence of a membrane, said dehydrogenation of said hydrocarbon under dehydrogenation conditions and at a temperature in the range of about 800° to about 1300° F. to produce an unsaturated hydrocarbon and hydrogen in a reaction zone; wherein said membrane is selectively permeable to said hydrogen; wherein said hydrogen produced during said dehydrogenation is continuously removed from said reaction zone by diffusion through said membrane; wherein said membrane comprises (a) a member of the group consisting of palladium and palladium alloys, and (b) at least one metal selected from the group consisting of the transition metals of Group IVB, Group VB and Group VIB of the Periodic Table of Elements; and wherein the surface of (a) is coated with (b).
Claim 2
Dependent Claim
132 words
A process for the dehydrogenation of a hydrocarbon comprising effecting, in the presence of a membrane, said dehydrogenation of said hydrocarbon under dehydrogenation conditions and at a temperature in the range of about 800° to about 1300° F. to produce an unsaturated hydrocarbon and hydrogen in a reaction zone; wherein said membrane is selectively permeable to said hydrogen; wherein said hydrogen produced during said dehydrogenation is continuously removed from said reaction zone by diffusion through said membrane; wherein said membrane comprises (a) a member of the group consisting of palladium and palladium alloys, and (b) at least one metal selected from the group consisting of the transition metals of Group IVB, Group VB and Group VIB of the Periodic Table of Elements; and wherein the surface of (a) is coated with (b).
Claim 3
Dependent Claim
22 words
A dehydrogenation process in accordance with claim 1 wherein (b) is a metal selected from the group consisting of zirconium and hafnium.
Claim 4
Dependent Claim
12 words
A dehydrogenation process in accordance with claim 1 wherein (b) is titanium.
Claim 5
Dependent Claim
14 words
A dehydrogenation process in accordance with claim 3 wherein (a) is a palladium-silver alloy.
Claim 6
Dependent Claim
22 words
A dehydrogenation process in accordance with claim 1 wherein (b) is a metal selected from the group consisting of vanadium and niobium..
Claim 7
Dependent Claim
12 words
A dehydrogenation process in accordance with claim 1 wherein (b) is tantalum.
Claim 8
Dependent Claim
14 words
A dehydrogenation process in accordance with claim 6 wherein (a) is a palladium-silver alloy.
Claim 9
Dependent Claim
35 words
A dehydrogenation process in accordance with claims 1, 2, 3, 4, 5, 6 or 7 wherein the coating of (b) on (a) has a thickness in the range of about 0.01 to about 0.1 micrometers.
Claim 10
Dependent Claim
17 words
A dehydrogenation process in accordance with claim 8 wherein said temperature is at least about 842° F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |