US4642302A
Expired / Lapsed
US
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Catalysts having alkoxide-modified supports and method of increasing the catalytic activity of a catalytic metal
Assignee: Dow Chemical Co
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Filing: 1985-12-16
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Granted: 1987-02-10
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Expires: 2005-12-16
Abstract
Abstract A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide on a core support, then calcining the support.
Inventors
- 👤 Clayton D. Wood
- 👤 Philip E. Garrou
- 👤 Iwao Kohatsu
- 👤 Edward F. Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:10
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J37/00; B01J37/02; B01J37/0201; B01J37/0207; B01J37/0209; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/46
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
49 words
A catalyst composition comprising a catalytic metal and an alkoxide-modified support, which support comprises a core support material having (a) a surface area of from about 20 to 200 m 2 /gram; and having (b) on the outer surface thereof a metal oxide produced from a precursor metal alkoxide.
Claim 2
Dependent Claim
49 words
A catalyst composition comprising a catalytic metal and an alkoxide-modified support, which support comprises a core support material having (a) a surface area of from about 20 to 200 m 2 /gram; and having (b) on the outer surface thereof a metal oxide produced from a precursor metal alkoxide.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the catalytic metal is a Group VIII metal.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the core support is a metal oxide.
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein the alkoxide anion of the metal alkoxide has from 1 to about 10 carbon atoms.
Claim 6
Dependent Claim
11 words
A catalyst composition consisting essentially of the composition of claim 1.
Claim 7
Dependent Claim
22 words
The composition of claim 1 wherein the catalytic metal is from about 0.1 to about 10 weight percent of the total composition.
Claim 8
Dependent Claim
28 words
The composition of claim 6 wherein the metal oxide layer prepared from the metal alkoxide is from about 0.1 to about 30 weight percent of the total composition.
Claim 9
Dependent Claim
48 words
The composition of claim 7 wherein the core support material is silica or alumina, the catalytic metal is from about 0.5 to about 5 weight percent of the composition, and the metal oxide from metal alkoxide is from about 1 to about 5 weight percent of the composition.
Claim 10
Dependent Claim
22 words
The composition of claim 1 wherein the metal of the metal alkoxide is a metal of Group IIIA, IVA, IVB or VB.
Claim 11
Dependent Claim
22 words
The composition of claim 1 wherein the alkoxide anion of the metal alkoxide has from about 2 to about 4 carbon atoms.
Claim 12
Dependent Claim
23 words
The composition of claim 1 wherein the metal of the metal alkoxide is aluminum, tantalum, or titanium and the catalytic metal is ruthenium.
Claim 13
Independent Claim
83 words
A method of increasing the catalytic activity of a catalytic metal, the method comprising supporting the catalytic metal on a support prepared by contacting a metal alkoxide with a core support, which support has a surface area of from about 20 to about 200 m 2 /g, then treating the mixture of the metal alkoxide and the core support to remove the carbon atoms therefrom, thereby leaving a coating on the core support, the coating comprising the metal oxide from the metal alkoxide.
Claim 14
Independent Claim
83 words
A method of increasing the catalytic activity of a catalytic metal, the method comprising supporting the catalytic metal on a support prepared by contacting a metal alkoxide with a core support, which support has a surface area of from about 20 to about 200 m 2 /g, then treating the mixture of the metal alkoxide and the core support to remove the carbon atoms therefrom, thereby leaving a coating on the core support, the coating comprising the metal oxide from the metal alkoxide.
Claim 15
Dependent Claim
19 words
The method of claim 12 wherein the treating step to remove the carbon atoms is a step comprising calcination.
Claim 16
Dependent Claim
22 words
The method of claim 12 wherein the core support is an oxide of a metal of Group IIIA, IVA, IVB or VB.
Claim 17
Dependent Claim
22 words
The method of claim 12 wherein the metal of the metal alkoxide is a metal of Group IIIA, IVA, IVB or VB.
Claim 18
Dependent Claim
15 words
The method of claim 12 wherein the catalytic metal is a metal of Group VIII.
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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |