Patent US3931052A successfully refreshed from Google Patents.
US3931052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina-supported catalyst for residua demetalation and desulfurization
Assignee: Mobil Oil AS
•
Filing: 1975-03-03
•
Granted: 1976-01-06
•
Expires: 1995-03-03
Abstract
Abstract This disclosure concerns the demetalation and desulfurization of metal and sulfur containing petroleum oils, preferably those containing residua hydrocarbon components, through the use of a catalyst comprising a hydrogenating component composited on a refractory base, preferably an alumina, whose pores are substantially distributed over a narrow 180A to 300A diameter range.
Inventors
- 👤 Stephen M. Oleck
- 👤 Thomas R. Stein
- 👤 Howard S. Sherry
- 👤 Donald Milstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:52
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J35/00; B01J35/60; B01J37/00; B01J37/20; B01J21/00; B01J21/02; B01J21/04; B01J35/61; B01J35/613; B01J35/64; B01J35/647; B01J35/66; B01J35/67; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A hydrodemetalation-desulfurization catalyst comprising : at least one metal selected from the group consisting of Group VI-B metals, Group VIII metals and zinc composited with an alumina base, said composite catalyst having not less than about 65 percent of the volume of the pores with a diameter within the range of about 180A to about 300A, and further having a surface area of about 40 m 2 /g to about 100 m 2 /g, and an
Claim 2
Dependent Claim
76 words
A hydrodemetalation-desulfurization catalyst comprising : at least one metal selected from the group consisting of Group VI-B metals, Group VIII metals and zinc composited with an alumina base, said composite catalyst having not less than about 65 percent of the volume of the pores with a diameter within the range of about 180A to about 300A, and further having a surface area of about 40 m 2 /g to about 100 m 2 /g, and an
Claim 3
Dependent Claim
13 words
The catalyst as claimed in claim 1 wherein said catalyst has a surface
Claim 4
Dependent Claim
23 words
The catalyst as claimed in claim 1, said hydrogenating component consists essentially of about 2 to about 10 percent by weight cobalt and
Claim 5
Dependent Claim
53 words
The catalyst of claim 3, the pore volume distribution being further defined according to pore diameter as follows: 0 to 20 percent in the 0-80A range, 0 to 30 percent in the 80A-180A range, 65 to 75 percent in the 180A-300A range and 0 to 20 percent in the range greater than 300A.
Claim 6
Dependent Claim
14 words
The catalyst as claimed in claim 4 wherein said alumina is in the theta
Claim 7
Dependent Claim
14 words
The catalyst as claimed in claim 4 wherein said alumina is in the delta
Claim 8
Dependent Claim
14 words
The catalyst as claimed in claim 4 wherein said alumina is a mixture of
Claim 9
Dependent Claim
26 words
The catalyst as claimed in claim 4 wherein said alumina is produced by calcining an alpha monohydrate to a temperature of about 1700°F to about 2000°F.
References Cited (Backward Citations)
US3712861A
Cited
US3798156A
Cited
US3814683A
Cited
US3876680A
Cited
US3876523A
Cited
US3891541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |