US4411824A
Expired / Lapsed
US
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Method of making a catalyst suitable for hydrometalation of hydrocarbonaceous feedstocks
Assignee: Chevron USA Inc
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Filing: 1982-08-11
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Granted: 1983-10-25
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Expires: 2002-08-11
Abstract
Abstract A method of manufacture of a catalyst for hydrodemetalation of feedstocks having a calculated pore diameter of at least 125 Angstroms; a surface area of at least 100 m 2 /g; a pore volume of at least 0.5 cc/grams; with at least 5% of the pore volume present provided by pores having a diameter of at least 1000 Angstroms and containing no more than 6% of catalytic metals from Group VIB and no more than 3% of catalytic metals from Group VIII.
Inventors
- 👤 H. Chiu Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J35/61; B01J35/615; B01J35/63; B01J35/635; B01J35/638; B01J35/64; B01J35/647; B01J35/651; B01J37/00; B01J37/0009; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
94 words
A method for making a catalyst for hydroprocessing hydrocarbonaceous feedstocks comprising: adding peptizing agent to alumina at a temperature of between about 20° to 100° C. to create a slurry having a pH of between 3 and 6; neutralizing the peptized alumina with aqueous solution of a nitrogen-containing base and a soluble Group VIB transition metal compound to create a shapable plastic mass; shaping the plastic mass; drying the mass at 100°-260° C. for between about 1 to 5 hours; calcining the dried mass at 450°-825° C. for between about 1 to 6 hours.
Claim 2
Independent Claim
94 words
A method for making a catalyst for hydroprocessing hydrocarbonaceous feedstocks comprising: adding peptizing agent to alumina at a temperature of between about 20° to 100° C. to create a slurry having a pH of between 3 and 6; neutralizing the peptized alumina with aqueous solution of a nitrogen-containing base and a soluble Group VIB transition metal compound to create a shapable plastic mass; shaping the plastic mass; drying the mass at 100°-260° C. for between about 1 to 5 hours; calcining the dried mass at 450°-825° C. for between about 1 to 6 hours.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the alumina is characterized by having a needle-like microstructure.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein at least a portion of the alumina has been previously calcined.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein the peptizing agent is formic acid.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein the peptizing agent contains up to 0.06 g-moles of a Group VIB metal per g-mole of dry Al 2 O 3 .
Claim 7
Dependent Claim
36 words
The method of claim 1 wherein the dried mass is calcined at 450°-825° C. for 1 to 3 hours in a steam atmosphere and then for between about 1/2 to 3 hours in a dry atmosphere.
Claim 8
Independent Claim
102 words
A method for making a catalyst for hydroprocessing hydrocarbonaceous feedstock comprising: adding peptizing agent to alumina at a temperature of between about 20° C. and 100° C., said peptizing agent containing a soluble salt of a Group VIB transition metal compound, thereby creating a slurry having a pH of between 3 and 6; neutralizing the peptized alumina with an aqueous solution of a nitrogen containing base to create a shapeable plastic mass; shaping said mass; drying the mass at 100°-260° C. for between about 1 and 5 hours; calcining the dried mass at 450°-825° C. for between about 1 to 3 hours.
Claim 9
Independent Claim
102 words
A method for making a catalyst for hydroprocessing hydrocarbonaceous feedstock comprising: adding peptizing agent to alumina at a temperature of between about 20° C. and 100° C., said peptizing agent containing a soluble salt of a Group VIB transition metal compound, thereby creating a slurry having a pH of between 3 and 6; neutralizing the peptized alumina with an aqueous solution of a nitrogen containing base to create a shapeable plastic mass; shaping said mass; drying the mass at 100°-260° C. for between about 1 and 5 hours; calcining the dried mass at 450°-825° C. for between about 1 to 3 hours.
Claim 10
Dependent Claim
15 words
The method of claim 7 wherein the alumina is characterized by having a needle-like microstructure.
Claim 11
Dependent Claim
17 words
The method of claim 7 wherein at least a portion of the alumina has been previously calcined.
Claim 12
Dependent Claim
12 words
The method of claim 7 wherein the peptizing agent is formic acid.
Claim 13
Dependent Claim
28 words
The method of claim 7 wherein the peptizing agent contains up to 0.06 g-moles of a Group VIB metal per g-mole of dry Al 2 O 3 .
Claim 14
Dependent Claim
36 words
The method of claim 7 wherein the dried mass is calcined at 450°-825° C. for 1 to 3 hours in a steam atmosphere and then for between about 1/2 to 3 hours in a dry atmosphere.
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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |