US4743577A
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Catalyst composition
Assignee: BP Corp North America Inc
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Filing: 1986-10-14
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Granted: 1988-05-10
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Expires: 2006-10-14
Abstract
Abstract Metallic catalysts are improved in performance and life when extended as a thin surface layer upon a porous, sintered metal substrate, particularly when employed in hydrogenation or decarbonylation reactions.
Inventors
- 👤 Hobe Schroeder
- 👤 Ricky L. Wittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:30
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/367; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/70; B01J23/89; B01J37/00; B01J37/02; B01J37/024; C07C51/42; C07C51/487
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
84 words
A catalyst composition consisting essentially of a first catalytic metal selected from the class consisting of palladium and rhodium and extended as a thin surface layer upon a second support metal selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, and afforded as a porous, sintered substrate, wherein the first metal is present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 2
Dependent Claim
84 words
A catalyst composition consisting essentially of a first catalytic metal selected from the class consisting of palladium and rhodium and extended as a thin surface layer upon a second support metal selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, and afforded as a porous, sintered substrate, wherein the first metal is present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 3
Dependent Claim
13 words
The catalyst composition of claim 1 wherein the first catalytic metal is palladium.
Claim 4
Dependent Claim
13 words
The catalyst composition of claim 1 wherein the second support metal is titanium.
Claim 5
Dependent Claim
61 words
The catalyst composition of claim 1 wherein an intermediate metal layer selected from the class consisting of copper, platinum and mixtures thereof is first extended upon the surface of the second support metal, wherein the intermediate metal is present at a level of 0.1-10 weight percent, calculated as the elemental intermediate metal and based on the weight of the catalyst composition.
Claim 6
Dependent Claim
24 words
The catalyst composition of claim 1 wherein the surface area is within the range from about 0.01 to about 10 square meters per gram.
Claim 7
Dependent Claim
21 words
The catalyst composition of claim 1 wherein the pore diameter is within the range from about 1 to about 10 microns.
Claim 8
Dependent Claim
20 words
The catalyst composition of claim 1 wherein the first catalytic metal is palladium and the second support metal is titanium.
Claim 9
Dependent Claim
91 words
An improved hydrogenation catalyst composition consisting essentially of a first catalytic hydrogenation metal selected from the class consisting of palladium and rodium and extended as a thin surface layer upon a second support metal, selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, and said support metal being present as a porous, sintered substrate, wherein the first metal is present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 10
Dependent Claim
91 words
An improved hydrogenation catalyst composition consisting essentially of a first catalytic hydrogenation metal selected from the class consisting of palladium and rodium and extended as a thin surface layer upon a second support metal, selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, and said support metal being present as a porous, sintered substrate, wherein the first metal is present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 11
Dependent Claim
13 words
The catalyst composition of claim 8 wherein the first catalytic metal is palladium.
Claim 12
Dependent Claim
13 words
The catalyst composition of claim 8 wherein the second support metal is titanium.
Claim 13
Dependent Claim
62 words
The hydrogenation catalyst composition of claim 8 wherein an intermediate metal layer selected from the class consisting of copper, platinum and mixtures thereof is first extended upon the surface of the second support metal, wherein the intermediate metal is present at a level of 0.1-10 weight percent, calculated as the elemental intermediate metal and based on the weight of the catalyst composition.
Claim 14
Dependent Claim
20 words
The catalyst composition of claim 8 wherein the first catalytic metal is palladium and the second support metal is titanium.
Claim 15
Dependent Claim
87 words
An improved decarbonylation catalyst composition consisting essentially of a first catalytic decarbonylation metal selected from the class consisting of palladium and rhodium, and extended as a thin surface layer upon a second support metal selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, said support metal being provided as a porous, sintered substrate and being present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 16
Dependent Claim
87 words
An improved decarbonylation catalyst composition consisting essentially of a first catalytic decarbonylation metal selected from the class consisting of palladium and rhodium, and extended as a thin surface layer upon a second support metal selected from the class consisting of titanium, nickel and alloys comprising one or more of said support metals, said support metal being provided as a porous, sintered substrate and being present at a level of 0.1-10 weight percent, calculated as the elemental first metal and based on the weight of the catalyst composition.
Claim 17
Dependent Claim
64 words
The decarbonylation catalyst composition of claim 13 wherein an intermediate metal layer is first extended upon the surface of the second support metal, said intermediate metal being selected from the class consisting of copper, nickel, platinum and mixtures thereof and being present at a level of 0.1-10 weight percent, calculated as the elemental intermediate metal and based on the weight of the catalyst composition.
Claim 18
Dependent Claim
21 words
The decarbonylation catalyst composition of claim 13 wherein the first catalytic metal is palladium and the second support metal is titanium.
Claim 19
Dependent Claim
89 words
A monolithic metal catalyst composition for use in the purification of terephthalic acid by conversion of 4-carboxybenzaldehyde contaminant, consisting essentailly of a porous, sintered metallic support selected from the class consisting of titanium, nickel and alloys thereof, and having dispersed on the surface thereof a layer of catalyst metal, said catalyst metal being selected from the class consisting of palladium, rhodium, and mixtures thereof and being present at a level of 0.1-10 weight percent, calculated as the elemental catalytic metal and based on the weight of the catalyst conposition.
Claim 20
Dependent Claim
89 words
A monolithic metal catalyst composition for use in the purification of terephthalic acid by conversion of 4-carboxybenzaldehyde contaminant, consisting essentailly of a porous, sintered metallic support selected from the class consisting of titanium, nickel and alloys thereof, and having dispersed on the surface thereof a layer of catalyst metal, said catalyst metal being selected from the class consisting of palladium, rhodium, and mixtures thereof and being present at a level of 0.1-10 weight percent, calculated as the elemental catalytic metal and based on the weight of the catalyst conposition.
Claim 21
Dependent Claim
22 words
The monolithic metal catalyst composition of claim 16 wherein the catalyst metal is palladium and the porous, sintered metallic support is titanium.
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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |