US4142962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation and hydrocracking with highly dispersed supported nickel catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1978-02-13
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Granted: 1979-03-06
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Expires: 1998-02-13
Abstract
Abstract This invention relates to a method for making supported nickel catalysts which are characterized as having the nickel in a highly dispersed state, the catalysts and use thereof in hydrogenation, reforming and hydrocarbon synthesis reactions, for example, Fischer-Tropsch reactions. Catalysts prepared by the method of the instant invention, wherein nonaqueous solutions are used in preparing the catalyst, are characterized as having a degree of dispersion of at least 10% greater than similar catalysts prepared by the prior art aqueous impregnation techniques and in some instances show an improved degree of dispersion of more than 50% over the catalysts prepared by the prior art methods. In the method of the instant invention the catalyst is prepared by slurrying a nickel metal precursor dissolved in a nonaqueous organic solvent with a high surface area support, for example, a refractory inorganic oxide, preferably selected from the group consisting of silica and alumina, removing the solvent to obtain a composite of said nickel metal precursor and said support and activating said composite by reducing in hydrogen at conditions sufficient to convert substantially all the nickel metal precursor to nickel metal. The nonaqueous solvent is preferably selected from the group consisting of aldehydes, ketones, ethers and organic nitrogen compounds, for example, acetone, acetonitrile, N-N-dimethyl formamide, hexamethyl phosphoramide, diethylether, tetrahydrofuran, dioxane, methylethyl ketone and acetaldehyde.
Inventors
- 👤 David J. C. Yates
- 👤 Lawrence L. Murrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:15
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/10; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J35/00; B01J35/30; B01J35/391; B01J35/393; C07C5/00; C07C5/02; C07C5/10; B01J2235/00; B01J35/392; B01J35/394; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/509; Y10S502/513
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
114 words
In catalytic hydrogenation wherein the feedstream to be processed is contacted with a catalyst under hydrogenation reaction conditions, the improvement comprising using as the catalyst, a highly dispersed nickel catalyst having a nickel surface area of from 200 to 400 m 2 /gram prepared by the method which comprises slurrying a nickel metal precursor dissolved in a nonaqueous organic liquid solvent with a high surface area refractory oxide support, removing the solvent to obtain a composite of said nickel metal precursor and said support, and activating said composite by reducing in hydrogen or hydrogen diluted with an inert gas at conditions sufficient to convert substantially all of the nickel metal precursor to nickel metal.
Claim 2
Dependent Claim
114 words
In catalytic hydrogenation wherein the feedstream to be processed is contacted with a catalyst under hydrogenation reaction conditions, the improvement comprising using as the catalyst, a highly dispersed nickel catalyst having a nickel surface area of from 200 to 400 m 2 /gram prepared by the method which comprises slurrying a nickel metal precursor dissolved in a nonaqueous organic liquid solvent with a high surface area refractory oxide support, removing the solvent to obtain a composite of said nickel metal precursor and said support, and activating said composite by reducing in hydrogen or hydrogen diluted with an inert gas at conditions sufficient to convert substantially all of the nickel metal precursor to nickel metal.
Claim 3
Dependent Claim
31 words
The process of claim 1 wherein the nonaqueous organic liquid used in the preparation of the catalyst is selected from the group consisting of aldehydes, ketones, ethers and organic nitrogen compounds.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the support is selected from the group consisting of silica and alumina.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein the support is silica.
Claim 6
Dependent Claim
37 words
The process of claim 1 wherein the nonaqueous organic liquid used in the preparation of the catalyst is selected from the group consisting of acetone, acetonitrile, N,N-dimethyl formamide, hexamethyl phosphoramide, diethylether, tetrahydrofuran, dioxane, methylethyl ketone, and acetaldehyde.
Claim 7
Dependent Claim
19 words
The process of claim 1 wherein the nonaqueous organic liquid used in the preparation of the catalyst is acetone.
Claim 8
Dependent Claim
13 words
The process of claim 6 wherein the nickel metal precursor is nickel nitrate.
Claim 9
Dependent Claim
20 words
The process of claim 1 wherein the catalyst used comprises from about 2 to about 20 wt. percent nickel metal.
Claim 10
Dependent Claim
28 words
The process of claim 1 wherein the catalyst used is reduced in hydrogen or hydrogen diluted with an inert gas at a temperature of at least 150° C.
Claim 11
Dependent Claim
115 words
In catalytic hydrocracking processes wherein the feedstream to be processed is contacted with a catalyst under hydrocracking reaction conditions, the improvement comprising using as the catalyst a highly dispersed nickel catalyst having a nickel surface area of from 200 to 400 m 2 /gram prepared by the method which comprises slurrying a nickel metal precursor dissolved in a nonaqueous organic liquid solvent with a high surface area refractory oxide support, removing the solvent to obtain a composite of said nickel metal precursor and said support, and activating said composite by reducing in hydrogen or hydrogen diluted with an inert gas at conditions sufficient to convert substantially all of the nickel metal precursor to nickel metal.
Claim 12
Dependent Claim
115 words
In catalytic hydrocracking processes wherein the feedstream to be processed is contacted with a catalyst under hydrocracking reaction conditions, the improvement comprising using as the catalyst a highly dispersed nickel catalyst having a nickel surface area of from 200 to 400 m 2 /gram prepared by the method which comprises slurrying a nickel metal precursor dissolved in a nonaqueous organic liquid solvent with a high surface area refractory oxide support, removing the solvent to obtain a composite of said nickel metal precursor and said support, and activating said composite by reducing in hydrogen or hydrogen diluted with an inert gas at conditions sufficient to convert substantially all of the nickel metal precursor to nickel metal.
Claim 13
Dependent Claim
31 words
The process of claim 10 wherein the nonaqueous organic liquid used in the preparation of the catalyst is selected from the group consisting of aldehydes, ketones, ethers and organic nitrogen compounds.
Claim 14
Dependent Claim
18 words
The process of claim 10 wherein the support is selected from the group consisting of silica and alumina.
Claim 15
Dependent Claim
10 words
The process of claim 10 wherein the support is silica.
Claim 16
Dependent Claim
37 words
The process of claim 10 wherein the nonaqueous organic liquid used in the preparation of the catalyst is selected from the group consisting of acetone, acetonitrile, N,N-dimethyl formamide, hexamethyl phosphoramide, diethylether, tetrahydrofuran, dioxane, methylethyl ketone, and acetaldehyde.
Claim 17
Dependent Claim
19 words
The process of claim 10 wherein the nonaqueous organic liquid used in the preparation of the catalyst is acetone.
Claim 18
Dependent Claim
13 words
The process of claim 15 wherein the nickel metal precursor is nickel nitrate.
Claim 19
Dependent Claim
20 words
The process of claim 10 wherein the catalyst used comprises from about 2 to about 20 wt. percent nickel metal.
Claim 20
Dependent Claim
28 words
The process of claim 10 wherein the catalyst used is reduced in hydrogen or hydrogen diluted with an inert gas at a temperature of at least 150° C.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |