US4085068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodenitrogenation and hydrocracking catalyst
Assignee: Atlantic Richfield Co
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Filing: 1976-04-26
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Granted: 1978-04-18
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Expires: 1996-04-26
Abstract
Abstract A process for hydrocracking and denitrogenation of heavy oils to form improved products, e.g., middle distillates, and a catalyst for use in the process are disclosed. The catalyst comprises a composite support containing a total of about 30% to about 70% by weight of silica and about 70% to about 30% by weight of alumina, formed from a combination of silica-alumina and alumina derived from hydrous alumina selected from the group consisting of boehmite, and mixtures of boehmite and amorphous hydrous alumina. The catalyst contains catalytically-effective amounts of a Group VIb and/or Group VIII metal. In a typical example, a distillate heavy mineral oil having an end boiling point up to about 1100° F. and containing from about 500 ppm to 5000 ppm of nitrogen is contacted with hydrogen over the catalyst at a temperature of about 650° F. to 900° F., a pressure of about 500 psi to 5000 psi, a weight hourly space velocity of about 0.5 to 4 and a hydrogen flow rate of from about 3000 to 30,000 standard cubic feet of hydrogen per barrel of oil to produce improved products.
Inventors
- 👤 James P. Gallagher
- 👤 John Mooi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
A composition of matter comprising a major amount of a catalytically-active support derived by the calcination of a material comprising from about 30 to about 70% by weight of silica and from about 30 to about 70% by weight of alumina, based on the total silica and alumina in said support, said silica and alumina being supplied by a mixture consisting essentially of from 40 to about 90% by weight of amorphous silica-alumina and from about 10 to about 60% by weight of alumina derived from hydrous alumina selected from the group consisting of boehmite and mixtures of boehmite and amorphous hydrous alumina and minor catalytically effective amounts of both nickel and at least one metal selected from the group consisting of Group VIb metals and mixtures thereof.
Claim 2
Dependent Claim
128 words
A composition of matter comprising a major amount of a catalytically-active support derived by the calcination of a material comprising from about 30 to about 70% by weight of silica and from about 30 to about 70% by weight of alumina, based on the total silica and alumina in said support, said silica and alumina being supplied by a mixture consisting essentially of from 40 to about 90% by weight of amorphous silica-alumina and from about 10 to about 60% by weight of alumina derived from hydrous alumina selected from the group consisting of boehmite and mixtures of boehmite and amorphous hydrous alumina and minor catalytically effective amounts of both nickel and at least one metal selected from the group consisting of Group VIb metals and mixtures thereof.
Claim 3
Dependent Claim
37 words
The composition of claim 1 wherein said support is derived by the calcination of an oil coagulated spherical material, said amorphous silica-alumina is finely divided, and said hydrous alumina is made by the acid hydrolysis of aluminum.
Claim 4
Dependent Claim
130 words
The composition of claim 1 wherein said material comprises from about 35 to about 65% by weight of silica and from about 35 to about 65% by weight of alumina based on the total silica and alumina in said support, said silica and alumina being supplied by a mixture consisting essentially of from about 40 to about 85% by weight of amorphous silica-alumina and from about 15 to about 60% by weight of alumina derived from hydrous alumina selected from the group consisting of boehmite and mixtures of boehmite and amorphous hydrous alumina, said mixtures composed of from about 45 to about 85% by weight of boehmite and from about 15 to about 55% by weight of amorphous hydrous alumina, the boehmite having a crystallite size up to about 50A.
Claim 5
Dependent Claim
141 words
The composition of claim 2 wherein said support is derived by the calcination of an oil coagulated spherical material comprising from about 35 to about 65% by weight of silica and from about 35 to about 65% by weight of alumina based on the total silica and alumina in the support, said silica and alumina being supplied by a mixture consisting essentially of from about 40 to about 85% of finely divided, amorphous silica-alumina and from about 15 to about 60% by weight of alumina derived from hydrous alumina made by the acid hydrolysis of aluminum, said hydrous alumina being composed of from about 45 to about 85% by weight of boehmite and from about 15 to about 55% by weight of amorphous hydrous alumina, the boehmite having a crystallite size in the range of from about 15A to about 35A.
Claim 6
Dependent Claim
74 words
The composition of claim 3 wherein said amorphous silica-alumina has a surface area of at least about 300 m 2 /gm. and said Group VIb metal is present in an amount from about 5 to about 40% by weight of the total composition calculated as the Group VIb metal oxide, and said nickel is present in an amount from about 2 to about 15% by weight of the total composition calculated as the metal.
Claim 7
Dependent Claim
74 words
The composition of claim 4 wherein said amorphous silica-alumina has a surface area of at least about 300 m 2 /gm. and said Group VIb metal is present in an amount from about 5 to about 40% by weight of the total composition calculated as the Group VIb metal oxide and said nickel is present in an amount from about 2 to about 15% by weight of the total composition calculated as the metal.
Claim 8
Dependent Claim
59 words
The composition of claim 5 wherein the Group VIb metal is present in an amount from about 10 to about 30% by weight of the total composition calculated as the Group VIb metal oxide and said nickel is present in an amount of from about 4 to about 10% by weight of the total composition calculated as the metal.
Claim 9
Dependent Claim
59 words
The composition of claim 6 wherein the Group VIb metal is present in an amount from about 10 to about 30% by weight of the total composition calculated as the Group VIb metal oxide and said nickel is present in an amount of from about 4 to about 10% by weight of the total composition calculated as the metal.
Claim 10
Dependent Claim
22 words
The composition of claim 7 wherein the Group VIb metal is selected from the group consisting of molybdenum, tungsten and mixtures thereof.
Claim 11
Dependent Claim
22 words
The composition of claim 8 wherein the Group VIb metal is selected from the group consisting of molybdenum, tungsten and mixtures thereof.
Claim 12
Dependent Claim
16 words
The composition of claim 9 wherein the Group VIb metal is molybdenum present as molybdenum oxide.
Claim 13
Dependent Claim
16 words
The composition of claim 10 wherein the Group VIb metal is molybdenum present as molybdenum oxide.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |