US3868332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Massive nickel catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-07-10
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Granted: 1975-02-25
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Expires: 1992-07-10
Abstract
Abstract An improved process for hydrogenating organic compounds is provided in which a catalyst is employed that has a nickel surface area greater than about 70 m2/g and a sodium content less than 0.2 wt. % based on the total weight of catalyst. Significantly improved activity is obtained with the nickelsililca catalyst of this invention particularly in conversion of benzene to cyclohexane and in reducing oxo aldehydes to alcohols. The catalyst is prepared by coprecipitating nickel and silicate ions in the presence of a porous silica support under conditions of dilution that favor high surface areas and low inclusion of sodium in the catalyst.
Inventors
- 👤 James L Carter
- 👤 Wayne G Custead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141; C07C2521/00; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
A nickel-silica catalyst having a nickel surface area greater than about 70 m2/g. of catalyst and a sodium content of less than 0.2 wt. percent.
Claim 2
Dependent Claim
25 words
A nickel-silica catalyst having a nickel surface area greater than about 70 m2/g. of catalyst and a sodium content of less than 0.2 wt. percent.
Claim 3
Dependent Claim
18 words
The catalyst of claim 1 wherein said catalyst has a total surface area greater than about 225 m2/g.
Claim 4
Dependent Claim
54 words
The catalyst of claim 1 including a porous silica support, and wherein said catalyst has a nickel surface area of 75 m2/g. to 100 m2/g., a nickel content of about 25 wt. percent to about 50 wt. percent based on the total weight of catalyst, and a sodium content of about 0.1 wt. percent.
Claim 5
Dependent Claim
41 words
The catalyst of claim 3 wherein the silica support is selected from the group consisting of kieselguhr and diatomaceous earth and said support constitutes from about 10 wt. percent to about 70 wt. percent of the total silica in the catalyst.
Claim 6
Dependent Claim
30 words
The catalyst of claim 3 wherein said silica support is kieselguhr and said kieselguhr constitutes from 30 wt. percent to 50 wt. percent of the total silica in the catalyst.
Claim 7
Dependent Claim
73 words
A PROCESS FOR PREPARING A NICKEL-SILICA CATALYST WHICH COMPRISES: A. PREPARING AN AQUEOUS SOLUTION CONTAINING BELOW ABOUT 30 G/L OF SILICATE ANION; B. SLURRY POROUS SILICA PARTICLES IN A SOLUTION PREPARED IN STEP (A); C. PREPARING AN AQUEOUS SOLUTION CONTAINING LESS THAN 60 G/L OF NICKEL IONS; D. ADDING THE SOLUTION PREPARED IN STEP (C) TO THE SLURRY PREPARED IN STEP (B) AT A SUBSTANTIALLY UNIFORM RATE; AND E. CALCINING THE RECOVERED SOLIDS.
Claim 8
Dependent Claim
73 words
A PROCESS FOR PREPARING A NICKEL-SILICA CATALYST WHICH COMPRISES: A. PREPARING AN AQUEOUS SOLUTION CONTAINING BELOW ABOUT 30 G/L OF SILICATE ANION; B. SLURRY POROUS SILICA PARTICLES IN A SOLUTION PREPARED IN STEP (A); C. PREPARING AN AQUEOUS SOLUTION CONTAINING LESS THAN 60 G/L OF NICKEL IONS; D. ADDING THE SOLUTION PREPARED IN STEP (C) TO THE SLURRY PREPARED IN STEP (B) AT A SUBSTANTIALLY UNIFORM RATE; AND E. CALCINING THE RECOVERED SOLIDS.
Claim 9
Dependent Claim
45 words
The process of claim 6 wherein said solution of step (a) contains about 10 to about 20 g/l of silicate anions derived from sodium metasilicate and said solution of step (c) contains about 30 to about 45 g/l of nickel ions derived from nickel nitrate.
Claim 10
Dependent Claim
29 words
The process of claim 6 including the steps of heating the resultant mixtures from step (d) to its boiling point and thereafter adding ammonium bicarbonate to the heated mixture.
Claim 11
Dependent Claim
17 words
The process of claim 8 including the step of maintaining the volume of solution constant during heating.
Claim 12
Dependent Claim
28 words
The process of claim 6 wherein the calcined solids are activated by contacting them with hydrogen at a temperature in the range of about 600*F. to about 900*F.
References Cited (Backward Citations)
US3697445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |