US4012340A
Expired / Lapsed
US
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Process for preparing catalysts for hydrodesulfurization
Assignee: Chiyoda Corp
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Filing: 1975-04-10
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Granted: 1977-03-15
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Expires: 1995-04-10
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 1< n< 100, 3n> m; n/(3n-m) </= 16 and X is a univalent anion, to obtain a uniform solution composition, treating the same hydrothermally, then adding, if required by the desired catalyst composition, a molybdenum or tungsten compound; adding one or more cobalt or nickel compounds; further adding and mixing one or more members selected from polyhydric alcohols, high-molecular organic substances and amine group substances and then treating the mixture in usual ways such 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 20:35
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; B01J23/882; B01J35/00; B01J35/60; B01J37/00; B01J37/0009; B01J37/0018; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B01J35/61; B01J35/615; B01J35/63; B01J35/633; B01J35/635; B01J35/64; B01J35/647; B01J35/66; B01J35/67
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A process for preparing a hydrodesulfurization catalyst which has fine pores sharply distributed in the range of 50 to 200A and comprising the steps of: i. adding a molybdate to a water soluble aluminum complex represented by the formula Al.sub.n (OH).sub.m X.sub.3n.sub.-m wherein 1 < n < 100, 3n > m, n/(3n-m) ≦ 16, 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 uniform solution composition of (i) hydrothermally at a temperature of from about 120° to about 330° C; iii. adding thereto a water soluble salt of nickel or cobalt; iv. further adding thereto and mixing a member selected from the group consisting of diethylene glycol, glycerin, polyethylene glycol, carboxymethylcellulose, microcrystalline cellulose, hexamethylene tetramine, azodicarbonamide and dinitrosopentamethylene tetramine; and v. treating the resultant mixture by drying, calcinating and grinding whereby said catalyst is obtained.
Claim 2
Dependent Claim
158 words
A process for preparing a hydrodesulfurization catalyst which has fine pores sharply distributed in the range of 50 to 200A and comprising the steps of: i. adding a molybdate to a water soluble aluminum complex represented by the formula Al.sub.n (OH).sub.m X.sub.3n.sub.-m wherein 1 < n < 100, 3n > m, n/(3n-m) ≦ 16, 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 uniform solution composition of (i) hydrothermally at a temperature of from about 120° to about 330° C; iii. adding thereto a water soluble salt of nickel or cobalt; iv. further adding thereto and mixing a member selected from the group consisting of diethylene glycol, glycerin, polyethylene glycol, carboxymethylcellulose, microcrystalline cellulose, hexamethylene tetramine, azodicarbonamide and dinitrosopentamethylene tetramine; and v. treating the resultant mixture by drying, calcinating and grinding whereby said catalyst is obtained.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the pore diameter of the catalyst is distributed in the range of 70 to 150A.
Claim 4
Dependent Claim
30 words
The process of 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
31 words
The process of claim 1 wherein said water-soluble salt of molybdenum is selected from the group consisting of ammonium molybdate, sodium molybdate, potassium molybdate, ammonium paramolybdate, sodium paramolybdate, and potassium paramolybdate.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein said water-soluble salt of nickel is selected from the group consisting of nitrates, chlorides, sulfates, acetates and oxalates of nickel.
Claim 7
Dependent Claim
28 words
The process of claim 1 wherein said water-soluble salt of cobalt is a member selected from the group consisting of nitrates, chlorides, sulfates, acetates, and oxalates of cobalt.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein hexamethylene tetramine is added in step (iv).
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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |