US4582819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic absorbent and a method for its preparation
Assignee: Honeywell UOP LLC
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Filing: 1984-12-11
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Granted: 1986-04-15
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Expires: 2004-12-11
Abstract
Abstract A novel catalytic absorbent composition is prepared with a synthetic copper or silver carbonate-containing material. The absorbent is useful for removing hydrogen sulfide and mercaptan sulfur from hydrocarbon oils, especially from feedstreams to a reformer.
Inventors
- 👤 J. Wayne Miller
- 👤 John W. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:20
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72; B01J23/38; B01J23/48; B01J23/50; B01J37/00; B01J37/0009; C; C10; C10G; C10G25/00; C10G25/003; C10G35/00; C10G35/04; C10G35/06; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
71 words
A method for preparing a composition comprising admixing a synthetic basic copper carbonate or silver carbonate having a sulfur content less than about 0.05 weight percent calculated as S, with a porous refractory oxide, or precursor thereof, forming an extrudable paste, shaping said extrudable paste, drying the shaped extrudable paste, and calcining the dried shaped extrudable paste to form a product comprising copper or silver components and said porous refractory oxide.
Claim 2
Independent Claim
71 words
A method for preparing a composition comprising admixing a synthetic basic copper carbonate or silver carbonate having a sulfur content less than about 0.05 weight percent calculated as S, with a porous refractory oxide, or precursor thereof, forming an extrudable paste, shaping said extrudable paste, drying the shaped extrudable paste, and calcining the dried shaped extrudable paste to form a product comprising copper or silver components and said porous refractory oxide.
Claim 3
Dependent Claim
34 words
The composition defined in claim 9 wherein said porous refractory oxide comprises alumina and said product contains about 1 to about 75 weight percent of said copper or silver components, calculated as the metal.
Claim 4
Dependent Claim
17 words
The method defined in claim 1 wherein said synthetic basic copper carbonate comprises basic copper (II) carbonate.
Claim 5
Dependent Claim
33 words
The method defined in claim 2 wherein said porous refractory oxide comprises alumina and said product contains about 1 to about 75 weight percent of copper or silver components, calculated as the metal.
Claim 6
Dependent Claim
22 words
The method defined in claim 1 wherein said admixing comprises comulling and said precursor of said porous refractory oxide is not peptized.
Claim 7
Dependent Claim
29 words
The method defined in claim 1 wherein said synthetic basic copper carbonate or silver carbonate is prepared from a soluble copper or silver salt and a soluble carbonate compound.
Claim 8
Dependent Claim
32 words
The method defined in claim 6 wherein said soluble copper salt is copper(II) nitrate and said soluble carbonate compound is selected from the group consisting of alkali metal carbonates and carbon dioxide.
Claim 9
Dependent Claim
32 words
The method defined in claim 1 wherein the atom ratio of sulfur to copper or sulfur to silver metal in said synthetic copper carbonate or silver carbonate is less than about 0.002.
Claim 10
Dependent Claim
72 words
A composition comprising copper oxide or silver oxide and a porous refractory oxide prepared by a method comprising admixing a synthetic basic copper carbonate or silver carbonate having a sulfur content less than about 0.05 weight percent calculated as S, with said porous refractory oxide or precursor thereof, forming an extrudable paste, shaping said extrudable paste, drying the shaped extrudable paste, and calcining the dried shaped extrudable paste to form said composition.
Claim 11
Dependent Claim
72 words
A composition comprising copper oxide or silver oxide and a porous refractory oxide prepared by a method comprising admixing a synthetic basic copper carbonate or silver carbonate having a sulfur content less than about 0.05 weight percent calculated as S, with said porous refractory oxide or precursor thereof, forming an extrudable paste, shaping said extrudable paste, drying the shaped extrudable paste, and calcining the dried shaped extrudable paste to form said composition.
Claim 12
Dependent Claim
17 words
The composition defined in claim 9 wherein said synthetic basic copper carbonate comprises basic copper (II) carbonate.
Claim 13
Dependent Claim
14 words
The composition defined in claim 9 wherein said porous refractory oxide comprises gamma alumina.
Claim 14
Dependent Claim
20 words
The composition defined in claim 9 comprising about 5 to about 30 weight percent of copper components, calculated as Cu.
Claim 15
Dependent Claim
17 words
The composition defined in claim 9 having a surface area greater than about 100 m 2 /gram.
Claim 16
Dependent Claim
33 words
The composition defined in claim 9 wherein the atom ratio of sulfur to copper or sulfur to silver metal in said synthetic basic carbonate copper or silver carbonate is less than about 0.002.
Claim 17
Dependent Claim
22 words
The composition defined in claim 9 wherein said admixing comprises comulling and said precursor of said porous refractory oxide is not peptized.
Claim 18
Dependent Claim
24 words
The composition defined in claim 9 wherein said synthetic basic copper carbonate is prepared from a soluble copper salt and a soluble carbonate compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |