US4489173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large pore shaped hydroprocessing catalysts
Assignee: Chevron USA Inc
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Filing: 1983-06-30
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Granted: 1984-12-18
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Expires: 2003-06-30
Abstract
Abstract Shaped catalysts useful for hydroprocessing hydrocarbon feedstocks. The catalysts are shaped as oval extrudates and having at least one ridge. The particles can be circumscribed by rectangles having two dimensions, a first dimension between 0.085 inch and 0.125 inch and a second dimension between 0.065 inch and 0.10 inch.
Inventors
- 👤 Kirk R. Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J35/00; B01J35/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
150 words
A catalyst for hydroprocessing heavy hydrocarbonaceous feedstocks, which catalyst: (a) comprises between 2 and 25 weight percent of a catalytic metal from Group VIB and between 0 and 15 weight percent of a catalytic metal from Group VIII supported on a catalyst base selected from the group consisting of refractory inorganic oxides, fibrous clays, and combinations thereof, where said weight percentages are based on the reduced catalytic metal content as a percentage of the total catalyst weight; and (b) has the form of elongated extrudates which have: (i) a cross-section which is an oval with at least one section extending from the flat surface of the oval and which has a first dimension between about 0.060 and about 0.125 inch and a second dimension, perpendicular to the first dimension, between about 0.030 and about 0.100 inch; and (ii) a surface area to volume ratio of less than 95 reciprocal inches.
Claim 2
Dependent Claim
150 words
A catalyst for hydroprocessing heavy hydrocarbonaceous feedstocks, which catalyst: (a) comprises between 2 and 25 weight percent of a catalytic metal from Group VIB and between 0 and 15 weight percent of a catalytic metal from Group VIII supported on a catalyst base selected from the group consisting of refractory inorganic oxides, fibrous clays, and combinations thereof, where said weight percentages are based on the reduced catalytic metal content as a percentage of the total catalyst weight; and (b) has the form of elongated extrudates which have: (i) a cross-section which is an oval with at least one section extending from the flat surface of the oval and which has a first dimension between about 0.060 and about 0.125 inch and a second dimension, perpendicular to the first dimension, between about 0.030 and about 0.100 inch; and (ii) a surface area to volume ratio of less than 95 reciprocal inches.
Claim 3
Dependent Claim
19 words
The catalyst of claim 1 which has a surface area to volume ratio of less than 90 reciprocal inches.
Claim 4
Dependent Claim
18 words
The catalyst of claim 1 wherein the average pore diameter is between about 40 and about 120 Angstroms.
Claim 5
Dependent Claim
28 words
The catalyst of claim 1 wherein substantially all points in the interior of the extrudates are within about 0.050 inch of the nearest extruded surface of the extrudates.
Claim 6
Dependent Claim
28 words
The catalyst of claim 4 wherein substantially all points in the interior of the extrudates are within about 0.016 inch of the nearest extruded surface of the extrudates.
Claim 7
Dependent Claim
22 words
The catalyst of claim 1 wherein substantial metals penetration occurs to a depth of at least 0.015 inch of the nearest surface.
Claim 8
Dependent Claim
25 words
The catalyst of claim 1 wherein the first dimension is between 0.085 and 0.125 inch and the second dimension is between 0.065 and 0.100 inch.
Claim 9
Dependent Claim
19 words
The catalyst of claim 7 which has a surface area to volume ratio of less than 90 reciprocal inches.
Claim 10
Dependent Claim
18 words
The catalyst of claim 7 wherein the average pore diameter is between about 40 and about 120 Angstroms.
Claim 11
Dependent Claim
28 words
The catalyst of claim 7 wherein substantially all points in the interior of the extrudates are within about 0.050 inch of the nearest extruded surface of the extrudates.
Claim 12
Dependent Claim
28 words
The catalyst of claim 10 wherein substantially all points in the interior of the extrudates are within about 0.016 inch of the nearest extruded surface of the extrudates.
Claim 13
Dependent Claim
22 words
The catalyst of claim 7 wherein substantial metals penetration occurs to a depth of at least 0.015 inch of the nearest surface.
References Cited (Backward Citations)
US30155A
Cited
US2408164A
Cited
US3347798A
Cited
US3674680A
Cited
US3764565A
Cited
USRE30155E
Cited
US3966644A
Cited
US4113661A
Cited
US4028227A
Cited
US3957627A
Cited
US3997426A
Cited
US4116819A
Cited
US4133777A
Cited
BE893160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |