US4111845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cracking catalyst modified by antimony thiophosphate
Assignee: Individual
•
Filing: 1977-02-11
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Granted: 1978-09-05
•
Expires: 1997-02-11
Abstract
Abstract Prevention of detrimental effect of metals such as nickel, vanadium and iron on the activity of a cracking catalyst when used in a cracking process having essentially no hydrogen added thereto is achieved by using in the cracking process novel cracking catalyst having less than 40 weight percent zeolite content and including antimony metal or a compound of antimony prior to subjecting the cracking catalyst to hydrocarbon cracking conditions.
Inventors
- 👤 Dwight L. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; B01J29/00; B01J29/04; B01J29/06; B01J29/076; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
A cracking catalyst composition consisting essentially of an unused catalytic cracking component useful for cracking of hydrocarbons in the absence of added hydrogen, said component having less than about 40 wt. % zeolite content and antimony in a concentration of about 0.005 to about 5 weight percent calculated as the elemental antimony and based on said unused catalytic cracking component and wherein said antimony is derived from antimony tris(O,O-dihydrocarbyldithiophosphate).
Claim 2
Dependent Claim
69 words
A cracking catalyst composition consisting essentially of an unused catalytic cracking component useful for cracking of hydrocarbons in the absence of added hydrogen, said component having less than about 40 wt. % zeolite content and antimony in a concentration of about 0.005 to about 5 weight percent calculated as the elemental antimony and based on said unused catalytic cracking component and wherein said antimony is derived from antimony tris(O,O-dihydrocarbyldithiophosphate).
Claim 3
Dependent Claim
15 words
A catalyst in accordance with claim 1 wherein said antimony is derived from antimony tris(O,O-dipropyldithiophosphate).
Claim 4
Dependent Claim
18 words
A cracking catalyst in accordance with claim 2 wherein said unused catalytic cracking component is a silica-based material.
Claim 5
Dependent Claim
17 words
A cracking catalyst in accordance with claim 1 wherein said catalytic cracking component is a silica/alumina-based meterial.
Claim 6
Dependent Claim
28 words
A cracking catalyst in accordance with claim 1 wherein said catalytic cracking component is a silica/alumina-based material containing about 5 to 30 wt. % of a zeolitic material.
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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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |