Patent US1832707A successfully refreshed from Google Patents.
Patent US3673115A successfully refreshed from Google Patents.
US3673115A
Expired / Lapsed
US
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Catalysts
Assignee: Lever Brothers Co
•
Filing: 1969-12-30
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Granted: 1972-06-27
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Expires: 1989-12-30
Abstract
Abstract In a process for the preparation of a nickel-on-silica catalyst, the use of an intimate mixture of an organic base, which base is substantially insoluble in the suspension of silica in aqueous nickel salt solution, as a means of withdrawing hydrogen ions from the solution and causing precipitation of nickel from the solution on to the silica carrier.
Inventors
- 👤 Bastiaan Gerardus Linsen
- 👤 Theo Jan Osinga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:31
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J35/00; B01J35/60; B01J21/00; B01J21/06; B01J21/08; B01J35/61; B01J35/615; B01J35/64; B01J35/647; B01J37/00; B01J37/02; B01J37/03; B01J37/031; B01J37/16; B01J37/18; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/509
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
33 words
A process as claimed in claim 1 in which the organic base is selected from primary and secondary alkyl amines containing in the alkyl groups a total of at least 8 carbon atoms.
Claim 2
Dependent Claim
29 words
A process as claimed in claim 2 in which the organic base comprises a mixture of t-alkyl amines, the t-alkyl groups of which contain 12 to 14 carbon atoms.
Claim 3
Dependent Claim
30 words
A process as claimed in claim 2 in which the organic basee comprises a mixture of t-alkyl amines, the t-alkyl groups of which contain contain 18 to 22 carbon atoms.
Claim 4
Dependent Claim
39 words
A process as claimed in claim 1 in which the organic base is dissolved in an organic solvent that is substantially insoluble in the aqueous salt solution and that does not react with it under the reaction conditions employed.
Claim 5
Dependent Claim
13 words
A process as claimed in claim 5 in which the solvent comprises chloroform.
Claim 6
Dependent Claim
35 words
A process as claimed in claim 1 in which the nickel salt comprises nickel sulphate and in which the concentration calculated as NiSO4.6 H2O in the aqueous solution is 1 to 5 percent by weight.
Claim 7
Dependent Claim
25 words
A process as claimed in claim 1 in which the silica containing carrier material comprises silica with a specific surface of 5 to 750 m2/g.
Claim 8
Dependent Claim
26 words
A process as claimed in claim 8 in which the silica has a significant part of its pores with a diameter of more than 25 A.
Claim 9
Dependent Claim
29 words
A process as claimed in claim 1 in which the solid material before drying is washed with a water miscible organic solvent having a boiling point below 100* C.
References Cited (Backward Citations)
US1232830A
Cited
US1280314A
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US1375368A
Cited
US1695666A
Cited
US1783662A
Cited
US2381198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |