US3894966A
Expired / Lapsed
US
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Method of manufacturing an extruded catalyst composition
Assignee: Universal Oil Products Co
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Filing: 1973-10-19
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Granted: 1975-07-15
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Expires: 1993-10-19
Abstract
Abstract An extruded catalyst composition characterized by a particle density of from about 1.12 to about 1.25 grams per cubic centimeter and prepared by dry-mixing a finely divided Group VIB metal compound and a Group VIII metal compound with a finely divided alpha-alumina monohydrate having an average bulk density of from about 0.4 to about 0.5. The mixture is extruded at a pressure of less than about 500 psig, dried and calcined. The finished catalyst composition is particularly useful as a hydrodesulfurization catalyst.
Inventors
- 👤 John E Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:13
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; B01J23/88; B01J23/882; B01J37/00; B01J37/0009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A METHOD FOR PREPARING AN EXTRUDED CATALYST COMPOSITION CHARACTERIZED BY A PRTICLE DENTISTY OF FROM ABOUT 1.12 TO ABOUT 1.25 GRAMS PR CUBIC CENTIMETER WHICH COMPRISES: A. DRY MIXING A FINELY DIVIDED GROUP VIB METAL COMPOUND AND GROUP VIII METAL COMPOUND WITH A FINELY DIVIDED ALPHA-ALUMINA MONOHYDRATE HAVING AN AVERAGE BULK DENSITY OF FROM ABOUT 0.4 TO ABOUT 0.5 GRAMS PR CUBIC CENTIMER, B. ADDING THERETO SUFFICIENT ACIDIC PEPTIZING AGENT TO PRODUCE A DOUGH EXTAUDABLE THROUGH A 1/32 INCH-1/8 INCH DIAMETER ORIFICE AT LESS THAN ABOUT 500 PSIG, C. EXTRUDING SAID DOUGH THROUGH A 1/32 INCH-1/8 INCH DIAMETER ORIFICE AT LESS THAN ABOUT 500 PSIG, AND D. CALCINING THE EXTRUDATE PARTICLES IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE OF FROM ABOUT 700* TO ABOUT 1200*F., E. SAID METAL COMPOUNDS BEING UTILIZED IN AN AMOUNT TO PROVIDE A FINAL CATALYST PRODUCT CONTAINING FROM ABOUT 4 TO ABOUT 30 WT. PERCENT GROUP VIB METAL AND FROM ABOUT 1 TO ABOUT 10 WT. PRCENT GROUP VII METAL.
Claim 2
Independent Claim
164 words
A METHOD FOR PREPARING AN EXTRUDED CATALYST COMPOSITION CHARACTERIZED BY A PRTICLE DENTISTY OF FROM ABOUT 1.12 TO ABOUT 1.25 GRAMS PR CUBIC CENTIMETER WHICH COMPRISES: A. DRY MIXING A FINELY DIVIDED GROUP VIB METAL COMPOUND AND GROUP VIII METAL COMPOUND WITH A FINELY DIVIDED ALPHA-ALUMINA MONOHYDRATE HAVING AN AVERAGE BULK DENSITY OF FROM ABOUT 0.4 TO ABOUT 0.5 GRAMS PR CUBIC CENTIMER, B. ADDING THERETO SUFFICIENT ACIDIC PEPTIZING AGENT TO PRODUCE A DOUGH EXTAUDABLE THROUGH A 1/32 INCH-1/8 INCH DIAMETER ORIFICE AT LESS THAN ABOUT 500 PSIG, C. EXTRUDING SAID DOUGH THROUGH A 1/32 INCH-1/8 INCH DIAMETER ORIFICE AT LESS THAN ABOUT 500 PSIG, AND D. CALCINING THE EXTRUDATE PARTICLES IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE OF FROM ABOUT 700* TO ABOUT 1200*F., E. SAID METAL COMPOUNDS BEING UTILIZED IN AN AMOUNT TO PROVIDE A FINAL CATALYST PRODUCT CONTAINING FROM ABOUT 4 TO ABOUT 30 WT. PERCENT GROUP VIB METAL AND FROM ABOUT 1 TO ABOUT 10 WT. PRCENT GROUP VII METAL.
Claim 3
Dependent Claim
15 words
The method of claim 1 further characterized in that said peptizing agent is nitric acid.
Claim 4
Dependent Claim
19 words
The method of claim 1 further characterized in that said Group VIB metal compound is a compound of molybdenum.
Claim 5
Dependent Claim
17 words
The method of claim 1 further characterized in that said Group VIB metal compound is molybdic anhydride.
Claim 6
Dependent Claim
19 words
The method of claim 1 further characterized in that said Group VIII metal compound is a compound of cobalt.
Claim 7
Dependent Claim
17 words
The method of claim 1 further characterized in that said Group VIII metal compound is cobalt carbonate.
Claim 8
Dependent Claim
65 words
The method of claim 1 further characterized in that said alpha-alumina monohydrate is an alpha-alumina monohydrate having a density of from about 0.7 to about 0.9 blended with an alpha-alumina monohydrate having an average bulk density of from about 0.2 to about 0.3 to yield an alpha-alumina monohydrate blend with an average bulk density of from about 0.4 to about 0.5 grams per cubic centimeter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |