US4048029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrogen
Assignee: Sunoco Inc R&M
•
Filing: 1976-07-01
•
Granted: 1977-09-13
•
Expires: 1996-07-01
Abstract
Abstract In the process of preparing hydrogen by passing a gas containing carbon monoxide over one side of a membrane which transports ionic oxygen and by passing steam over the other side of said membrane whereby the steam is converted to hydrogen and the carbon monoxide is oxidized to carbon dioxide, the improvement which comprises employing as said membrane a metal salt where the metal cation is selected from metals of Groups IB, IIB, and VA, and the salt anion is an oxygen containing anion of a metal from Group VB, VIB, and VIIB.
Inventors
- 👤 Walter H. Seitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
In the process of preparing hydrogen by passing a gas containing carbon monoxide over one side of a membrane which transports ionic oxygen and by passing steam over the other side of said membrane whereby the steam is converted to hydrogen and the carbon monoxide is oxidized to carbon dioxide, the improvement which comprises employing as said membrane a metal salt where the metal cation is selected from metals of Group IB, IIB, and VA, and the salt anion is an oxygen containing anion of a metal from Groups VB, VIB, and VIIB.
Claim 2
Dependent Claim
93 words
In the process of preparing hydrogen by passing a gas containing carbon monoxide over one side of a membrane which transports ionic oxygen and by passing steam over the other side of said membrane whereby the steam is converted to hydrogen and the carbon monoxide is oxidized to carbon dioxide, the improvement which comprises employing as said membrane a metal salt where the metal cation is selected from metals of Group IB, IIB, and VA, and the salt anion is an oxygen containing anion of a metal from Groups VB, VIB, and VIIB.
Claim 3
Dependent Claim
17 words
The process of claim 1 operated at a temperature of from about 500° to about 650° C.
Claim 4
Dependent Claim
11 words
The process of claim 2 where the membrane is bismuth molybdate.
Claim 5
Dependent Claim
11 words
The process of claim 2 where the membrane is silver molybdate.
Claim 6
Dependent Claim
11 words
The process of claim 2 where the membrane is zinc molybdate.
Claim 7
Dependent Claim
14 words
The process of claim 1 where hydrogen is present in the carbon monoxide gas.
Claim 8
Dependent Claim
103 words
In the process of preparing hydrogen by passing a gas containing carbon monoxide derived by burning a carbonaceous fuel over one side of a membrane which transports ionic oxygen and by passing steam over the other side of said membrane whereby the steam is converted to hydrogen and the carbon monoxide is oxidized to carbon dioxide, the improvement which comprises employing as said membrane a porous support impregnated with metal salt where the metal cation is selected from metals of Groups IB, IIB, and VA, and the salt anion is an oxygen containing anion of a metal from Groups VB, VIB, and VIIB.
Claim 9
Dependent Claim
103 words
In the process of preparing hydrogen by passing a gas containing carbon monoxide derived by burning a carbonaceous fuel over one side of a membrane which transports ionic oxygen and by passing steam over the other side of said membrane whereby the steam is converted to hydrogen and the carbon monoxide is oxidized to carbon dioxide, the improvement which comprises employing as said membrane a porous support impregnated with metal salt where the metal cation is selected from metals of Groups IB, IIB, and VA, and the salt anion is an oxygen containing anion of a metal from Groups VB, VIB, and VIIB.
Claim 10
Dependent Claim
16 words
The process of claim 7 where the membrane is a molybdate of silver, zinc or bismuth.
Claim 11
Dependent Claim
11 words
The process of claim 7 where the membrane is a vanadate.
Claim 12
Dependent Claim
11 words
The process of claim 7 where the membrane is a tungstate.
References Cited (Backward Citations)
US3616334A
Cited
US3993653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |