Patent US4259213A successfully refreshed from Google Patents.
US4259213A
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High copper level comulled and impregnated sulfur sorbent
Assignee: Chevron USA Inc
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Filing: 1979-07-23
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Granted: 1981-03-31
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Expires: 1999-07-23
Abstract
Abstract A porous sulfur sorbent is disclosed which has principal use in desulfurizing reformer feedstreams. The sorbent is prepared by peptizing alumina with acid and mulling the peptized alumina with a copper compound to form an extrudable dough. The dough is extruded, dried and impregnated with additional copper. The resulting sorbent has a higher capacity for adsorbing sulfur compounds than conventional prior art materials.
Inventors
- 👤 Keith C. Bishop, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:57
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/06; B01J20/08; B01J20/0203; B01J20/0233; B01J20/0237; B01J20/28; B01J20/28054; B01J20/28069; B01J20/28073; B01J20/28078; B01J20/28083; B01J20/30; B01J20/3007; B01J20/3021; B01J20/3078; B01J20/3085; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/3236
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A porous sulfur sorbent, prepared by the process which comprises: peptizing an alumina with acid; mulling the peptized alumina with a copper compound to form an extrudable dough; extruding the dough; drying and calcining the extrudate; impregnating the calcined extrudate with an aqueous solution of a copper compound and drying and calcining the impregnated extrudate.
Claim 2
Dependent Claim
55 words
A porous sulfur sorbent, prepared by the process which comprises: peptizing an alumina with acid; mulling the peptized alumina with a copper compound to form an extrudable dough; extruding the dough; drying and calcining the extrudate; impregnating the calcined extrudate with an aqueous solution of a copper compound and drying and calcining the impregnated extrudate.
Claim 3
Dependent Claim
32 words
A porous sulfur sorbent as recited in claim 1, wherein said acid is an acid selected from the group consisting of formic acid, nitric acid, acetic acid, propionic acid, and hydrochloric acid.
Claim 4
Dependent Claim
31 words
A porous sulfur sorbent as recited in claim 1, wherein said mulled copper compound is a copper compound selected from the group consisting of copper carbonate, copper oxide, and copper nitrate.
Claim 5
Dependent Claim
20 words
A porous sulfur sorbent as recited in claim 1, wherein said alumina is predominantly comprised of an alpha alumina monohydrate.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |