US3872028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of partially sulfided metallic supported catalysts
Assignee: Lever Brothers Co
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Filing: 1973-01-18
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Granted: 1975-03-18
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Expires: 1993-01-18
Abstract
Abstract A process for preparing a partly sulphided metallic supported catalyst is described with especially uniform distribution of sulphur by contacting the catalyst either during or after precipitation with flowers of sulphur in aqueous medium at pH 7 to 11. The atomic ratio of sulphur to nickel at the surface of the nickel is preferably from 0.33 to 0.70 for hydrogenation of unsaturated fatty acid derivatives.
Inventors
- 👤 Hendrik Theodorus Rijnten
- 👤 Eduard Theodoor Jasper Eikema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/20; C; C11; C11C; C11C3/00; C11C3/12; C11C3/123
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
A PROCESS FOR THE PREPARATION OF A PARTLY SULFIDED METALLIC SUPPORTED CATALYST CONTAINING FROM ABOUT 2 TO ABOUT 20 PERCENT SULFUR BASED ON METAL IN WHICH PROCESS A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, MOLYBDENUM, COBALT, TUNGSTEN, IRON COPPER, CADMIUM AND MANGANESE, ITS HYDROXIDE, OXIDE OR SALT, DURING OR AFTER PRECIPITATION ON A SUPPORT, IS PARTLY SULFIDED BYCONTACT WITHFLOWERS OF SULFUR SUSPENDED IN WATER AT A TEMPERATURE ABOVE 80*C WITH A PH BETWEEN 7 AND
Claim 2
Dependent Claim
77 words
A PROCESS FOR THE PREPARATION OF A PARTLY SULFIDED METALLIC SUPPORTED CATALYST CONTAINING FROM ABOUT 2 TO ABOUT 20 PERCENT SULFUR BASED ON METAL IN WHICH PROCESS A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, MOLYBDENUM, COBALT, TUNGSTEN, IRON COPPER, CADMIUM AND MANGANESE, ITS HYDROXIDE, OXIDE OR SALT, DURING OR AFTER PRECIPITATION ON A SUPPORT, IS PARTLY SULFIDED BYCONTACT WITHFLOWERS OF SULFUR SUSPENDED IN WATER AT A TEMPERATURE ABOVE 80*C WITH A PH BETWEEN 7 AND
Claim 3
Dependent Claim
31 words
A process as claimed in claim 1 in which the metal is precipitated as hydroxide, oxide or salt from aqueous solution on a support-material by gradual and uniform change in pH.
Claim 4
Dependent Claim
28 words
A process as claimed in claim 2 in which the aqueous solution contains urea and the pH is gradually and uniformly raised by heating the solution above 80*C.
Claim 5
Dependent Claim
14 words
A partly sulfided metal supported catalyst prepared by a process according to claim 1.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |