US4264342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally condensed mixture of polyacrylonitrile and ferrous acetate as carbon monoxide adsorbent
Assignee: Lyondell Chemical Technology LP
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Filing: 1980-03-28
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Granted: 1981-04-28
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Expires: 2000-03-28
Abstract
Abstract Separating carbon monoxide from mixed gases containing the same with an adsorbent which is the product of heating a mixture of ferrous acetate and polyacrylonitrile in a ratio of ferrous acetate to polyacrylonitrile of 0.5:1.0 to 2.0:1.0 at a temperature of about 200°-400° C. in an oxygen-containing atmosphere for from about 2 to 10 hours.
Inventors
- 👤 Mary T. Arnold
- 👤 John J. Leonard
- 👤 John J. McCoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:45
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/20; C; C01; C01B; C01B32/00; C01B32/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A process for separating carbon monoxide from mixed gases containing the same comprising contacting said mixed gases with an adsorbent, said adsorbent being the product of heating a mixture of ferrous acetate and polyacrylonitrile in a ratio of ferrous acetate to polyacrylonitrile of 0.5:1.0 to 2.0:1.0 at a temperature of about 200°-400° C. in an oxygen-containing atmosphere for from about 2 to 10 hours.
Claim 2
Dependent Claim
64 words
A process for separating carbon monoxide from mixed gases containing the same comprising contacting said mixed gases with an adsorbent, said adsorbent being the product of heating a mixture of ferrous acetate and polyacrylonitrile in a ratio of ferrous acetate to polyacrylonitrile of 0.5:1.0 to 2.0:1.0 at a temperature of about 200°-400° C. in an oxygen-containing atmosphere for from about 2 to 10 hours.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said ratio is from 0.8:1.0 to 1.8:1.0.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said temperature is from 220°-250° C.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said time is from 3 to 6 hours.
Claim 6
Dependent Claim
22 words
The process of claim 1 wherein said mixture of gases is contacted with said adsorbent at ambient temperature and at atmospheric pressure.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein said adsorbed CO is recovered by thermally stripping said adsorbent at a temperature of from about 100° to 160° C.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein said mixture of gases is nitrogen-rich.
References Cited (Backward Citations)
US3982897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |