US4470829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid adsorbent for carbon monoxide and process for separation from gas mixture
Assignee: Nippon Steel Corp
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Filing: 1982-08-24
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Granted: 1984-09-11
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Expires: 2002-08-24
Abstract
Abstract A solid adsorbent comprising: (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c) polystyrene or its derivatives; or (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c') activated carbon or graphite. This solid adsorbent can effectively adsorb carbon monoxide from a gas mixture containing 1% to 99% by volume of carbon monoxide. Furthermore, the adsorbents comprising components (a), (b) and (c'), or components (a), (b) and (c) prepapared by using nonaromatic solvents can effectively adsorb carbon monoxide from a gas mixture containing up to approximately 40,000 ppm of water.
Inventors
- 👤 Hidefumi Hirai
- 👤 Makoto Komiyama
- 👤 Susumu Hara
- 👤 Keiichiro Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:59
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/20; C; C01; C01B; C01B32/00; C01B32/40; Y; Y10; Y10S; Y10S95/00; Y10S95/90; Y10S95/901
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
25 words
A solid adsorbent for carbon monoxide comprising (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c) polystyrene or its derivatives.
Claim 2
Dependent Claim
25 words
A solid adsorbent for carbon monoxide comprising (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c) polystyrene or its derivatives.
Claim 3
Dependent Claim
35 words
A solid adsorbent as claimed in claim 1, wherein said solid adsorbent is prepared by using a nonaromatic solvent capable of dissolving or swelling the polystyrene or its derivatives, thereby forming a water-resistant solid adsorbent.
Claim 4
Dependent Claim
26 words
A solid adsorbent as claimed in claim 1 or 2, wherein a molar ratio of the copper(I) halide to the aluminum(III) halide is 0.3 through 10.
Claim 5
Dependent Claim
33 words
A solid adsorbent as claimed in claim 1 or 2, wherein a molar ratio of a monomer residual group of the polystyrene or its derivatives to the copper(I) halide is 0.5 through 30.
Claim 6
Dependent Claim
20 words
A solid adsorbent as claimed in claim 1 or 2, wherein the copper(I) halide is copper(I) chloride or copper(I) bromide.
Claim 7
Dependent Claim
28 words
A solid adsorbent as claimed in claim 1 or 2, wherein the aluminum(III) halide is selected from the group consisting of aluminum(III) chloride, aluminum(III) fluoride, and aluminum(III) bromide.
Claim 8
Dependent Claim
22 words
A solid adsorbent as claimed in claim 1 or 2, wherein the polystyrene has a number-average molecular weight of 5000 through 500,000.
Claim 9
Dependent Claim
32 words
A solid adsorbent as claimed in claim 1 or 2, wherein the polystyrene derivatives are copolymers of 60 mol% to 99 mol% of styrene and 1 mol% to 40 mol% of divinylbenzene.
Claim 10
Dependent Claim
41 words
A process for separating carbon monoxide from a gas mixture comprising the step of: contacting the gas mixture with a solid adsorbent comprising (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c) polystyrene or its derivatives.
Claim 11
Dependent Claim
41 words
A process for separating carbon monoxide from a gas mixture comprising the step of: contacting the gas mixture with a solid adsorbent comprising (a) at least one copper(I) halide, (b) at least one aluminum(III) halide, and (c) polystyrene or its derivatives.
Claim 12
Dependent Claim
28 words
A process as claimed in claim 9, wherein said solid adsorbent is prepared by using a nonaromatic solvent capable of dissolving or swelling the polystyrene or its derivatives.
Claim 13
Dependent Claim
31 words
A process as claimed in claim 9 or 10, wherein the gas mixture is contacted with the solid adsorbent at a temperature of 0° C. to 90° C. under normal pressures.
Claim 14
Dependent Claim
22 words
A process as claimed in claim 9 or 10, wherein the gas mixture contains 1.0% through 99% by volume of carbon monoxide.
Claim 15
Dependent Claim
22 words
A process as claimed in claim 9 or 10, wherein the gas mixture contains less than a saturated vapor pressure of water.
References Cited (Backward Citations)
US3317452A
Cited
US3658463A
Cited
US4174373A
Cited
US4019879A
Cited
US4102802A
Cited
SU596278A1
Cited
US4158643A
Cited
US4110252A
Cited
US4116996A
Cited
US4242226A
Cited
US4279874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |