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US4224191A
Expired / Lapsed
US
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High-copper-level comulled sulfur sorbent
Assignee: Chevron USA Inc
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Filing: 1979-03-05
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Granted: 1980-09-23
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Expires: 1999-03-05
Abstract
Abstract A porous sulfur sorbent, especially useful for removing residual H 2 S and mercaptans from reformer feed streams, prepared by peptizing an alumina with acid, mulling the peptized alumina with a copper compound to form an extrudable dough, extruding the dough, and drying and calcining the extrudate.
Inventors
- 👤 Keith C. Bishop, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:37
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/0203; B01J20/0233; B01J20/0237; B01J20/0274; B01J20/0277; B01J20/0296; B01J20/06; B01J20/08; B01J20/30; B01J20/3007; B01J20/3078; B01J20/3085; B01J23/00; B01J23/70; B01J23/72; C; C10; C10G; C10G25/00; C10G25/003; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
37 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; and drying and calcining the extrudate.
Claim 2
Dependent Claim
37 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; and drying and calcining the 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
29 words
A porous sulfur sorbent as recited in claim 1, wherein said copper 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 extrudate is calcined at a temperature of 500° C.
Claim 6
Dependent Claim
19 words
A porous sulfur sorbent as recited in claim 1, wherein said alumina is predominantly comprised of an alpha-alumina monohydrate.
Claim 7
Dependent Claim
27 words
A porous sulfur sorbent as recited in claim 1, wherein said calcined extrudate has a copper content of at least 14 weight percent based upon the metal.
Claim 8
Dependent Claim
26 words
A porous sulfur sorbent as recited in claim 1, wherein said extrudate has a copper content of at least 20 weight percent based upon the metal.
Claim 9
Dependent Claim
55 words
A porous sulfur sorbent which comprises: 14-75 weight percent copper, based upon the metal; 60-86 weight percent alumina; said sorbent having a pore volume in the range from about 0.5 to 0.9 cubic centimeters per gram and having at least 75% of said pore volume in pores having a diameter between 40 and 200 Angstroms.
Claim 10
Dependent Claim
55 words
A porous sulfur sorbent which comprises: 14-75 weight percent copper, based upon the metal; 60-86 weight percent alumina; said sorbent having a pore volume in the range from about 0.5 to 0.9 cubic centimeters per gram and having at least 75% of said pore volume in pores having a diameter between 40 and 200 Angstroms.
Claim 11
Dependent Claim
36 words
A porous sulfur sorbent as recited in claim 8, wherein said sorbent comprises 14-40 weight percent copper and at least 85% of said pore volume is in pores having a diameter between 40 and 200 Angstroms.
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) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |