US4419273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay-based sulfur sorbent
Assignee: Chevron USA Inc
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Filing: 1981-11-04
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Granted: 1983-12-06
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Expires: 2001-11-04
Abstract
Abstract A composition of matter suitable for use as a sulfur sorbent. A fibrous silicate clay with randomly dispersed fibers is mixed with alumina and a copper-containing compound so that at least 20 weight percent of the finished sorbent is copper.
Inventors
- 👤 Donald S. Santilli
- 👤 Donald W. Blakely, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; C; C10; C10G; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A sulfur sorbent comprising a support made from fibrous silicate clay with randomly dispersed fibers and at least enough copper-containing compound to provide a sorbent of at least 25 weight percent copper measured as the reduced metal.
Claim 2
Dependent Claim
37 words
A sulfur sorbent comprising a support made from fibrous silicate clay with randomly dispersed fibers and at least enough copper-containing compound to provide a sorbent of at least 25 weight percent copper measured as the reduced metal.
Claim 3
Dependent Claim
22 words
The sulfur sorbent of claim 1 wherein the fibrous silicate clay is selected from the group comprising aluminum silicates and magnesium silicates.
Claim 4
Dependent Claim
24 words
The sulfur sorbent of claim 1 wherein the fibrous silicate clay is selected from the group consisting of attapulgite, palygorskite, sepiolite, halloysite, and crysotile.
Claim 5
Dependent Claim
18 words
The sulfur sorbent of claim 1 wherein said sulfur sorbent contains from 1 to 50 weight percent alumina.
Claim 6
Independent Claim
45 words
The method of manufacture of a sulfur sorbent comprising: forming an aqueous slurry of fibrous silicate clay and a copper-containing compound; agitating the aqueous slurry sufficiently to disperse the fibers; shaping the dispersed fibers into particles; drying the shaped particle; and calcining the dried particle.
Claim 7
Independent Claim
45 words
The method of manufacture of a sulfur sorbent comprising: forming an aqueous slurry of fibrous silicate clay and a copper-containing compound; agitating the aqueous slurry sufficiently to disperse the fibers; shaping the dispersed fibers into particles; drying the shaped particle; and calcining the dried particle.
Claim 8
Dependent Claim
27 words
The method of claim 5 wherein a copper-containing compound selected from the group consisting of Cu, CuO, CuCO 3 , CuS is added with the clay slurry.
Claim 9
Dependent Claim
30 words
The method of claim 5 wherein an aqueous solution of a copper compound selected from the group consisting of CuNO 3 and CuCl 2 is impregnated into the shaped particle.
Claim 10
Dependent Claim
33 words
The method of claim 5 wherein said aqueous slurry of fibrous silicate clay includes from 1 to 50 weight percent alumina based on the weight of fibrous silicate clay in said aqueous slurry.
References Cited (Backward Citations)
US4258020A
Cited
US4224191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |