US4313013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Palladium or a palladium alloy hydrogen diffusion membrane treated with a volatile compound of silicon is used to separate hydrogen from a mixture of it with a hydrocarbon
Assignee: Phillips Petroleum Co
•
Filing: 1980-08-01
•
Granted: 1982-01-26
•
Expires: 2000-08-01
Abstract
Abstract A palladium or palladium alloy hydrogen diffusion membrane which has been treated with silane and/or silicon tetrafluoride is employed to separate hydrogen from a hydrocarbon with which it is in admixture and from which it may have been produced under dehydrogenation conditions in the presence of said membrane.
Inventors
- 👤 Jesse R. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:48
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; C07; C07C; C07C7/00; C07C7/144; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/048
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A process for the separation of hydrogen from a mixture of it and a hydrocarbon in the presence of a palladium hydrogen diffusion membrane which comprises pretreating said membrane with a compound of silicon at an elevated temperature effective to lay down on the membrane a thin layer of silicon and then subjecting hydrocarbon to said conditions under which hydrogen is separated therefrom.
Claim 2
Dependent Claim
63 words
A process for the separation of hydrogen from a mixture of it and a hydrocarbon in the presence of a palladium hydrogen diffusion membrane which comprises pretreating said membrane with a compound of silicon at an elevated temperature effective to lay down on the membrane a thin layer of silicon and then subjecting hydrocarbon to said conditions under which hydrogen is separated therefrom.
Claim 3
Dependent Claim
20 words
A process according to claim 1 wherein the membrane is treated with at least one of silane and silicon tetrafluoride.
Claim 4
Dependent Claim
16 words
A process according to claim 1 wherein the hydrogen is in admixture with at least ethylene.
Claim 5
Dependent Claim
41 words
A process according to claim 1 wherein the treatment of the membrane is effected at a temperature in the approximate range of from about 250°-450° C. and at a contact time in the approximate range of from 0.1 to 10 hours.
Claim 6
Dependent Claim
33 words
A process according to claim 1 wherein the membrane after thorough cleaning by oxidation and subsequent reduction is contacted for about 1 hour at a temperature of about 450° C. with silicon tetrafluoride.
Claim 7
Dependent Claim
24 words
A process according to claim 5 wherein the membrane is contacted on one side with silicon tetrafluoride at a pressure just slightly above atmospheric.
Claim 8
Dependent Claim
15 words
A process according to claim 1 wherein the mixture is produced by a dehydrogenation operation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |