US4318897A
Expired / Lapsed
US
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Process for preparing hydrided iron-vanadium alloys
Assignee: Honeywell UOP LLC
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Filing: 1980-08-18
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Granted: 1982-03-09
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Expires: 2000-08-18
Abstract
Abstract Ferrovanadium alloys containing from about 5 to about 30% iron may be used as hydrogen storage systems. Such alloys have a hydrogen-to-metal ratio which may be as great as about 1, and may be dehydrided at temperatures less than about 200 DEG C.
Inventors
- 👤 Stephen T. Gonczy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:20
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0018; C01B3/0031; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A method for forming a hydrided vanadium-iron alloy substantially corresponding to the formula V.sub.(1-x) Fe x H z where x ranges from about 0.05 to about 0.28, where H represents the hydrogen recoverable from said alloy at a temeprature less than about 200° C. at a pressure of at least 1 atmosphere, and z has a value up to about 1 for the controlled storage of hydrogen which comprises activating by heating in a vacuum at a temperature from about 400° C. to about 650° C. an alloy substantially of the formula V.sub.(1-x) Fe x where x is as above defined and thereafter contacting said activated alloy with hydrogen at a pressure of at least 1 atmosphere and less than 50 atmospheres.
Claim 2
Independent Claim
122 words
A method for forming a hydrided vanadium-iron alloy substantially corresponding to the formula V.sub.(1-x) Fe x H z where x ranges from about 0.05 to about 0.28, where H represents the hydrogen recoverable from said alloy at a temeprature less than about 200° C. at a pressure of at least 1 atmosphere, and z has a value up to about 1 for the controlled storage of hydrogen which comprises activating by heating in a vacuum at a temperature from about 400° C. to about 650° C. an alloy substantially of the formula V.sub.(1-x) Fe x where x is as above defined and thereafter contacting said activated alloy with hydrogen at a pressure of at least 1 atmosphere and less than 50 atmospheres.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein x has a value of about 0.09.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein x has a value of about 0.19.
References Cited (Backward Citations)
JPS5127890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |