US4443552A
Expired / Lapsed
US
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Catalysts for the catalytic cracking of heavy oil
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1982-08-16
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Granted: 1984-04-17
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Expires: 2002-08-16
Abstract
Abstract The invention provides catalysts for the catalytic cracking of heavy oil, comprising an iron-containing crystalline aluminosilicate zeolite. This crystalline aluminosilicate zeolite is obtained by treating a raw crystalline aluminosilicate zeolite material with an acidic solution containing iron ions, or alternatively, by applying a steam treatment and, thereafter, treating with an acidic solution containing iron ions. The use of the catalyst provides a gasoline fraction having a high octane value and an intermediate fraction from heavy oil in high yield.
Inventors
- 👤 Hiroshi Iida
- 👤 Akira Iino
- 👤 Kosaku Honna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:14
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/064; B01J29/072; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
An improved catalyst for the catalytic cracking of heavy oil comprising a crystalline aluminosilicate zeolite prepared by treating a starting aluminosilicate zeolite having a SiO 2 /Al 2 O 3 molar ratio of at least 4.6 and a Na 2 O content of not more than 2.4% by weight with an acidic aqueous solution containing iron ions having a pH of 2 or less, whereby a part of the original aluminum content of said starting aluminosilicate zeolite is replaced by iron.
Claim 2
Dependent Claim
81 words
An improved catalyst for the catalytic cracking of heavy oil comprising a crystalline aluminosilicate zeolite prepared by treating a starting aluminosilicate zeolite having a SiO 2 /Al 2 O 3 molar ratio of at least 4.6 and a Na 2 O content of not more than 2.4% by weight with an acidic aqueous solution containing iron ions having a pH of 2 or less, whereby a part of the original aluminum content of said starting aluminosilicate zeolite is replaced by iron.
Claim 3
Dependent Claim
17 words
The catalyst of claim 1 wherein said starting aluminosilicate zeolite is immersed in said acidic aqueous solution.
Claim 4
Dependent Claim
26 words
The catalyst of claim 2 wherein the crystalline aluminosilicate zeolite contains between 2 and 20% by weight of iron calculated as Fe 2 O 3 .
Claim 5
Dependent Claim
14 words
The catalyst of claim 2 wherein said catalyst contains an inorganic oxide catalyst adjuvant.
Claim 6
Dependent Claim
22 words
The catalyst of claim 4 wherein the weight ratio of crystalline aluminosilicate zeolite to said inorganic oxide is between 3/97 and 70/30.
Claim 7
Dependent Claim
20 words
The catalyst of claim 4 wherein said inorganic oxide is a porous alumina, a porous silica, or a porous silica-alumina.
Claim 8
Dependent Claim
89 words
An improved catalyst for the catalytic cracking of heavy oil comprising a crystalline aluminosilicate zeolite prepared by treating a starting aluminosilicate zeolite having a SiO 2 /Al 2 O 3 molar ratio of at least 4.6 and a Na 2 O content of not more than 2.4% by weight with steam and then treating said steam-treated zeolite with an acidic aqueous solution containing iron ions having a pH of 2 or less, whereby a part of the original aluminum content of said starting aluminosilicate zeolite is replaced by iron.
Claim 9
Dependent Claim
89 words
An improved catalyst for the catalytic cracking of heavy oil comprising a crystalline aluminosilicate zeolite prepared by treating a starting aluminosilicate zeolite having a SiO 2 /Al 2 O 3 molar ratio of at least 4.6 and a Na 2 O content of not more than 2.4% by weight with steam and then treating said steam-treated zeolite with an acidic aqueous solution containing iron ions having a pH of 2 or less, whereby a part of the original aluminum content of said starting aluminosilicate zeolite is replaced by iron.
Claim 10
Dependent Claim
17 words
The catalyst of claim 7 wherein said starting aluminosilicate zeolite is immersed in said acidic aqueous solution.
Claim 11
Dependent Claim
26 words
The catalyst of claim 8 wherein the crystalline aluminosilicate zeolite contains between 2 and 20% by weight of iron calculated as Fe 2 O 3 .
Claim 12
Dependent Claim
14 words
The catalyst of claim 8 wherein said catalyst contains an inorganic oxide catalyst adjuvant.
Claim 13
Dependent Claim
22 words
The catalyst of claim 10 wherein the weight ratio of crystalline aluminosilicate zeolite to said inorganic oxide is between 3/97 and 70/30.
Claim 14
Dependent Claim
20 words
The catalyst of claim 10 wherein said inorganic oxide is a porous alumina, a porous silica, or a porous silica-alumina.
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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |