US5001098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5A zeolite/kaolinite adsorbent for gas purification
Assignee: IFP Energies nouvelles
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Filing: 1988-07-18
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Granted: 1991-03-19
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Expires: 2008-07-18
Abstract
Abstract Adsorbent material well adapted for the purification of gases (notably by the PSA and TSA methods) by adsorbing impurities therefrom that are more polar or polarizable than the gases to be purified, e.g., nitrogen, the oxides of carbon and hydrocarbons, comprises a matrix of a type 5A zeolite molecular sieve and a kaolinite clay binder therefor, the clay binder having a concentration of at least 75% by dry weight of kaolinite and a maximum quartz concentration of 20% by dry weight.
Inventors
- 👤 Bernard Pacaud
- 👤 Marc Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:44
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; C; C01; C01B; C01B3/00; C01B3/50; C01B3/56; B01D; B01D53/00; B01D53/02; B01D53/04; B01J20/16; B01J20/18; B01J20/183; C01B2203/00; C01B2203/04; C01B2203/042; C01B2203/043; C01B2203/0465; C01B2203/047; C01B2203/0475; C01B2203/048; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
An adsorbent material adapted for the purification of gases by adsorbing impurities therefrom that are more polar or polarizable than the gases to be purified, comprising a matrix of a 5A zeolite molecular sieve and a kaolinite containing clay binder therefor, said clay binder comprising a concentration of at least 75% by dry weight of kaolinite and a maximum quartz concentration of 20% by dry weight.
Claim 2
Dependent Claim
66 words
An adsorbent material adapted for the purification of gases by adsorbing impurities therefrom that are more polar or polarizable than the gases to be purified, comprising a matrix of a 5A zeolite molecular sieve and a kaolinite containing clay binder therefor, said clay binder comprising a concentration of at least 75% by dry weight of kaolinite and a maximum quartz concentration of 20% by dry weight.
Claim 3
Dependent Claim
20 words
The adsorbent material as defined by claim 1, comprising from 10% to 40% by weight of said kaolinite clay binder.
Claim 4
Dependent Claim
20 words
The adsorbent material as defined by claim 2, comprising from 10% to 30% by weight of said kaolinite clay binder.
Claim 5
Dependent Claim
23 words
The adsorbent material as defined by claim 1, said clay binder comprising a concentration of at least 80% by dry weight of kaolinite.
Claim 6
Dependent Claim
21 words
The adsorbent material as defined by claim 1, said clay binder comprising a maximum quartz concentration of 12% by dry weight.
Claim 7
Dependent Claim
31 words
The adsorbent material as defined by claim 1, said clay binder comprising hexagonal platelets of kaolinite, the major portion of which having a mean diameter ranging from 500 to 5,000 Å.
Claim 8
Dependent Claim
20 words
The adsorbent material as defined by claim 1, said 5A zeolite molecular sieve being at least 65% divalent cation exchanged.
Claim 9
Dependent Claim
21 words
The adsorbent material as defined by claim 7, said 5A zeolite molecular sieve being from 65% to 85% divalent cation exchanged.
Claim 10
Dependent Claim
14 words
The adsorbent material as defined by claim 7, said exchanged divalent cation being calcium.
Claim 11
Dependent Claim
21 words
The adsorbent material as defined by claim 1, said 5A zeolite molecular sieve having a halogen concentration of less than 0.15%.
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) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |