US3954673A
Expired / Lapsed
US
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Process for preparing catalysts for hydrodesulfurization
Assignee: Chiyoda Corp
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Filing: 1972-02-01
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Granted: 1976-05-04
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Expires: 1992-02-01
Abstract
Abstract A process for preparing catalysts for hydrodesulfurization which have fine pores sharply distributed in the range of 50 to 200A by the steps of adding a molybdate to a water soluble aluminum complex represented by the general formula Aln(OH)mX3n-m (wherein n>1, 3n>m and X is an anion) to obtain a uniform solution composition, treating the same hydrothermally, then adding a member selected from the group consisting of molybdenum and tungsten compounds and one or more members selected from the group consisting of iron, cobalt and nickel compounds, further adding and mixing with one or more members selected from the group consisting of polyvalent higher alcohols, high-molecular organic substances and amine group substances and then treating the mixture in such usual ways as drying, calcinating, grinding, moisture adjusting, molding, roasting and the like.
Inventors
- 👤 Tatsuo Morimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:51
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J35/64; B01J35/647; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J23/883; B01J37/00; B01J37/0009; B01J37/0018; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/507
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A process for preparing a hydrodesulfurization catalyst which has fine pores sharply distributed in the range og 50 to 200 A which comprises i. adding a molybdate to a water-soluble aluminum complex represented by the formula Al n (OH) m X 3n -m wherein n>1, 3n>m and X is an anion selected from the group consisting of Cl, NO 3 , I, Br and ClO 4 whereby there is obtained a uniform solution composition; ii. treating the resulting composition hydrothermally at a temperature on the order of from about 120° to about 330° C; iii. adding thereto a water soluble salt of molybdenum or tungsten and at least one member selected from the group consisting of water soluble salts of iron, cobalt or nickel; iv. further adding thereto and mixing at least one member selected from the group consisting of diethylene glycol, carboxymethyl-cellulose, glycerin, polyethylene glycol, microcrystalline cellulose, hexamethylene tetramine, azodicarbonamide and dinitrosopentamethylene tetramine; and v. treating the resultant mixture by drying and calcinating whereby said catalyst is obtained.
Claim 2
Dependent Claim
169 words
A process for preparing a hydrodesulfurization catalyst which has fine pores sharply distributed in the range og 50 to 200 A which comprises i. adding a molybdate to a water-soluble aluminum complex represented by the formula Al n (OH) m X 3n -m wherein n>1, 3n>m and X is an anion selected from the group consisting of Cl, NO 3 , I, Br and ClO 4 whereby there is obtained a uniform solution composition; ii. treating the resulting composition hydrothermally at a temperature on the order of from about 120° to about 330° C; iii. adding thereto a water soluble salt of molybdenum or tungsten and at least one member selected from the group consisting of water soluble salts of iron, cobalt or nickel; iv. further adding thereto and mixing at least one member selected from the group consisting of diethylene glycol, carboxymethyl-cellulose, glycerin, polyethylene glycol, microcrystalline cellulose, hexamethylene tetramine, azodicarbonamide and dinitrosopentamethylene tetramine; and v. treating the resultant mixture by drying and calcinating whereby said catalyst is obtained.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein the pore diameter of the catalyst is distributed in the range of 70 - 150A.
Claim 4
Dependent Claim
31 words
A process according to claim 1 wherein said molybdate is a member selected from a group consisting of ammonium molybdate, sodium 1-molybdate, sodium 2-molybdate, ammonium paramolybdate, sodium paramolybdate and sodium 8-molybdate.
Claim 5
Dependent Claim
28 words
A process according to claim 1 wherein said molybdate compound is a member selected from a group consisting of ammonium molybdate, sodium molybdate, ammonium paramolybdate, and sodium paramolybdate.
Claim 6
Dependent Claim
29 words
A process according to claim 1 wherein said nickel compound is a member selected from a group consisting of nitrates, chlorides, sulfates, acetates oxalates, carbonates and oxides of nickel.
Claim 7
Dependent Claim
29 words
A process according to claim 1 wherein said cobalt compound is a member selected from a group consisting of nitrates, chlorides, sulfates, acetates, oxalates, carbonates and oxides of cobalt.
References Cited (Backward Citations)
US3075915A
Cited
US3383301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |