US4083807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing crystalline aluminosilicate cracking catalysts
Assignee: Chevron USA Inc
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Filing: 1976-01-13
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Granted: 1978-04-11
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Expires: 1996-01-13
Abstract
Abstract An improved catalytic cracking catalyst is obtained by a method which comprises incorporating into a crystalline aluminosilicate catalyst by ion exchange a substantial concentration of a metal selected from the group consisting of antimony, bismuth and manganese.
Inventors
- 👤 Joel D. McKinney
- 👤 Bruce R. Mitchell
- 👤 Raynor T. Sebulsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:36
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/076; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
-- A method which comprises preparing a zeolitic catalyst composition by contacting a cracking catalyst composition containing a crystalline aluminosilicate zeolite with an ionizable salt of a metal selected from the group consisting of antimony and bismuth under ion exchange conditions, recovering therefrom a crystalline aluminosilicate catalyst composition containing at least 0.25 weight percent of said metal, and thereafter contacting said catalyst composition under cracking conditions with a hydrocarbon charge stock containing at least 3.5 ppm nickel equivalents as metal contaminants and having an average boiling temperature above 600° F.
Claim 2
Dependent Claim
90 words
-- A method which comprises preparing a zeolitic catalyst composition by contacting a cracking catalyst composition containing a crystalline aluminosilicate zeolite with an ionizable salt of a metal selected from the group consisting of antimony and bismuth under ion exchange conditions, recovering therefrom a crystalline aluminosilicate catalyst composition containing at least 0.25 weight percent of said metal, and thereafter contacting said catalyst composition under cracking conditions with a hydrocarbon charge stock containing at least 3.5 ppm nickel equivalents as metal contaminants and having an average boiling temperature above 600° F.
Claim 3
Independent Claim
88 words
A method which comprises preparing a zeolitic catalyst composition by contacting a crystalline aluminosilicate with an ionizable salt of a metal selected from the group consisting of antimony and bismuth under ion exchange conditions, recovering therefrom a crystalline aluminosilicate catalyst composition containing at least 0.25 weight percent of said metal, and thereafter contacting said catalyst composition under cracking conditions with a hydrocarbon charge stock having an average boiling temperature above 600° F. until the said catalyst composition contains in excess of 1,500 ppm nickel equivalents as metal contaminants.
Claim 4
Independent Claim
88 words
A method which comprises preparing a zeolitic catalyst composition by contacting a crystalline aluminosilicate with an ionizable salt of a metal selected from the group consisting of antimony and bismuth under ion exchange conditions, recovering therefrom a crystalline aluminosilicate catalyst composition containing at least 0.25 weight percent of said metal, and thereafter contacting said catalyst composition under cracking conditions with a hydrocarbon charge stock having an average boiling temperature above 600° F. until the said catalyst composition contains in excess of 1,500 ppm nickel equivalents as metal contaminants.
Claim 5
Dependent Claim
27 words
The method of claim 1 wherein said catalyst composition contains a laminar 2:1 layer lattice aluminosilicate material in an amount ranging from 10 to 95 weight percent.
Claim 6
Dependent Claim
27 words
The method of claim 2 wherein said catalyst composition contains a laminar 2:1 layer lattice aluminosilicate material in an amount ranging from 10 to 95 weight percent.
References Cited (Backward Citations)
US3236762A
Cited
US3346512A
Cited
US3527824A
Cited
US3711422A
Cited
US3876558A
Cited
US3977963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |