US3637525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and method of preparation
Assignee: Universal Oil Products Co
•
Filing: 1969-11-21
•
Granted: 1972-01-25
•
Expires: 1989-11-21
Abstract
Abstract A method of manufacturing an extruded catalyst composite of a Group VIII metal, a Group VIB metal and a refractory inorganic oxide-boron phosphate carrier material. A refractory inorganic oxide hydrogel is prepared and formed into a slurry with an aqueous solution of boric and phosphoric acids. The liquid level of the slurry is adjusted to form an extrudable mass comprising from about 15 to about 45 weight percent solids. The material is then extruded, impregnated with a metal of Group VIII and a metal of Group VIB, dried and calcined in an oxidizing atmosphere.
Inventors
- 👤 Mark J O'hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:09
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; B01J27/00; B01J27/14; B01J27/186; B01J27/188; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
34 words
The method of claim 1 further characterized in that said hydrogel is a composite of alumina and silica prepared by coprecipitation from a hydrosol comprising a silica sol commingled with a soluble aluminum salt.
Claim 2
Dependent Claim
27 words
The method of claim 2 further characterized in that said hydrogel comprises alumina composited with silica in a weight ratio of from about 1.5:1 to about 9:1.
Claim 3
Dependent Claim
23 words
The method of claim 2 further characterized in that said alumina and silica are coprecipitated at a pH in excess of about 8.0.
Claim 4
Dependent Claim
23 words
The method of claim 1 further characterized in that said carrier material comprises from about 13 to about 35 weight percent boron phosphate.
Claim 5
Dependent Claim
35 words
The method of claim 1 further characterized in that said calcininG is effected at a temperature of from about 700* to about 1,200* F. in an oxidizing atmosphere until the composite attains a constant weight.
Claim 6
Dependent Claim
29 words
The method of claim 1 further characterized in that said Group VIII metal is nickel and comprises from about 0.1 to about 10 weight percent of the catalyst composition.
Claim 7
Dependent Claim
29 words
The method of claim 1 further characterized in that said Group VIB metal is molybdenum and comprises from about 5 to about 20 weight percent of the catalyst composition.
Claim 8
Dependent Claim
28 words
The method of claim 1 further characterized by an average bulk density of less than about 0.45 g./cc. and a crushing strength in excess of about 5 pounds.
Claim 9
Independent Claim
173 words
A method of manufacturing an extruded catalyst composition consisting essentially of from about 0.1 to about 10 weight percent Group VIII metal and from about 5 to about 20 weight percent Group VIB metal composited with an alumina-silica-boron phosphate carrier material which comprises cogelling alumina and silica from a hydrosol comprising a silica sol commingled with a soluble aluminum salt; forming a slurry of the resulting cogel in an aqueous solution of boric and phosphoric acids; treating the slurry to recover one portion thereof comprising less than about 20 weight percent solids and another portion comprising in excess of about 45 weight percent solids; commingling sufficient of the first-mentioned portion with the last-mentioned portion to form an extrudable mass comprising from about 15 to about 45 weight percent solids, and extruding the same; drying the extrudate and impregnating the same with a metal of Group VIII and a metal of Group VIB; and drying and calcining the resulting composite at a temperature of from about 700* to about 1,200* in an oxidizing atmosphere.
Claim 10
Dependent Claim
23 words
The method of claim 10 further characterized in that said alumina and silica are coprecipitated at a pH in excess of about 8.
Claim 11
Dependent Claim
23 words
The method of claim 10 further characterized in that said carrier material comprises from about 13 to about 35 weight percent boron phosphate.
Claim 12
Dependent Claim
35 words
The method of claim 10 further characterized in that said calcining is effected at a temperature of from about 700* to about 1,200* F. in an oxidizing atmosphere until the composite attains a constant weight.
Claim 13
Dependent Claim
29 words
The method of claim 10 further characterized in that said Group VIII metal is nickel and comprises from about 0.1 to about 10 weight percent of the catalyst composition.
Claim 14
Dependent Claim
29 words
The method of claim 10 further characterized in that said Group VIB metal is molybdenum and comprises from about 5 to about 20 weight percent of the catalyst composition.
Claim 15
Dependent Claim
28 words
The method of claim 10 further characterized by an average bulk density of less than about 0.45 g./cc. and a crushing strength in excess of about 5 pounds.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |