Patent US3985679A successfully refreshed from Google Patents.
US3985679A
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Transition metal catalyst supported on particulate high surface area BBB type polymer
Assignee: Celanese Corp
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Filing: 1975-04-28
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Granted: 1976-10-12
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Expires: 1995-04-28
Abstract
Abstract A highly dispersed supported transition metal catalyst is provided having an ability to withstand highly elevated temperatures and caustic solutions. The transition metal is distributed over the surface of a particulate BBB type polymer of unusually high surface area. The supported catalyst may be formed through the formation of a coordination complex between a transition metal salt and benzimidazonitrogen groups present upon the surface of BBB type polymer, and the subsequent reduction of the metal cations of the salt to the metallic form. The resulting supported catalyst may be utilized in a reaction zone provided at a temperature up to about 500°C., and particularly is suited for use in hydrogenation reactions, isomerization reactions, and oxidation reactions or in a fuel cell application wherein oxygen and hydrogen react to generate electrical current.
Inventors
- 👤 Paul D. Taylor
- 👤 Anthony B. Conciatori
- 👤 Rufus S. Jones, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:00
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/165; B01J31/1658; B01J31/02; B01J31/06; B01J31/18; B01J31/1805; B01J31/181; C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; B01J2231/00; B01J2231/50; B01J2231/52; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/10; B01J2531/18; B01J2531/80; B01J2531/82; B01J2531/822; B01J2531/824; B01J2531/828; B01J2531/84; B01J2531/842; B01J2531/845; B01J2531/847; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
119 words
A process for the formation of an improved supported transition metal catalyst comprising: a. contacting a particulate polymer possessing benzimidazo-nitrogen groups which is a condensation product of at least one organic tetra-amine with at least one tetra-carboxylic acid or the corresponding anhydride and having a surface area of about 100 to 500 square meters per gram with a solution of a salt of a transition metal wherein the benzimidazo-nitrogen groups present upon the surface of said polymer form a coordination complex with said salt, b. recovering said particulate polymer bearing said coordination complex upon the surface thereof, and c. reducing the transition metal cations of said coordination complex present upon the surface of said polymer to the metallic form.
Claim 2
Dependent Claim
119 words
A process for the formation of an improved supported transition metal catalyst comprising: a. contacting a particulate polymer possessing benzimidazo-nitrogen groups which is a condensation product of at least one organic tetra-amine with at least one tetra-carboxylic acid or the corresponding anhydride and having a surface area of about 100 to 500 square meters per gram with a solution of a salt of a transition metal wherein the benzimidazo-nitrogen groups present upon the surface of said polymer form a coordination complex with said salt, b. recovering said particulate polymer bearing said coordination complex upon the surface thereof, and c. reducing the transition metal cations of said coordination complex present upon the surface of said polymer to the metallic form.
Claim 3
Dependent Claim
22 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 1 wherein said polymer is poly(bisbenzimidazobenzophenanthroline).
Claim 4
Dependent Claim
34 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 1 wherein said particulate polymer has a surface area of about 200 to 350 square meters per gram.
Claim 5
Dependent Claim
26 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 1 wherein said transition metal is a Group VIII metal.
Claim 6
Dependent Claim
38 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 1 wherein said salt of a transition metal is water-soluble and water serves as the solvent for said solution of step (a).
Claim 7
Dependent Claim
46 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 1 wherein said reduction of said transition metal cations of said coordination complex is carried out at a temperature of about 25° to 400° C. in the presence of hydrogen.
Claim 8
Dependent Claim
114 words
A process for the formation of an improved supported transition metal catalyst comprising: a. contacting particulate poly(bisbenzimidazobenzophenanthroline) polymer having a surface area of about 200 to 350 square meters per gram with an aqueous solution of a water-soluble salt of a Group VIIIB metal wherein the benzimidazo-nitrogen groups present upon the surface of said polymer form a coordination complex with said salt, b. recovering said particulate poly(bisbenzimidazobenzophenanthroline) polymer bearing said coordination complex upon the surface thereof, and c. reducing the Group VIII B metal cations of said coordination complex present upon the surface of said poly(bisbenzimidazobenzophenanthroline) polymer to the metallic form by contact with hydrogen at a temperature of about 25° to 400° C.
Claim 9
Dependent Claim
114 words
A process for the formation of an improved supported transition metal catalyst comprising: a. contacting particulate poly(bisbenzimidazobenzophenanthroline) polymer having a surface area of about 200 to 350 square meters per gram with an aqueous solution of a water-soluble salt of a Group VIIIB metal wherein the benzimidazo-nitrogen groups present upon the surface of said polymer form a coordination complex with said salt, b. recovering said particulate poly(bisbenzimidazobenzophenanthroline) polymer bearing said coordination complex upon the surface thereof, and c. reducing the Group VIII B metal cations of said coordination complex present upon the surface of said poly(bisbenzimidazobenzophenanthroline) polymer to the metallic form by contact with hydrogen at a temperature of about 25° to 400° C.
Claim 10
Dependent Claim
49 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 7 wherein said water-soluble salt is present in said aqueous solution of step (a) in a concentration of about 0.01 to 10 percent by weight based upon the total weight of the solution.
Claim 11
Dependent Claim
61 words
A process for the formation of an improved supported transition metal catalyst in accordance with claim 7 wherein said water-soluble salt of a Group VIII B metal is selected from the group consisting essentially of cobalt nitrate, nickel nitrate, ferric nitrate, rhodium chloride, palladium nitrate, sodium tetrachloropalladate, potassium tetrachloroplatinate, chloroplatinous acid, chloropalladous acid, gold nitrate, and mixed salts of the foregoing.
Claim 12
Dependent Claim
70 words
A supported catalyst comprising a support of particulate polymer which is a condensation product of at least one organic tetra-amine with at least one tetra-carboxylic acid or the corresponding anhydride having a surface area of about 100 to 500 square meters per gram, and a transition metal distributed upon the surface thereof in a concentration of about 0.01 to 5 percent by weight based upon the weight of said support.
Claim 13
Dependent Claim
70 words
A supported catalyst comprising a support of particulate polymer which is a condensation product of at least one organic tetra-amine with at least one tetra-carboxylic acid or the corresponding anhydride having a surface area of about 100 to 500 square meters per gram, and a transition metal distributed upon the surface thereof in a concentration of about 0.01 to 5 percent by weight based upon the weight of said support.
Claim 14
Dependent Claim
13 words
A supported catalyst in accordance with claim 10 wherein said polymer is poly(bisbenzimidazobenzophenanthroline).
Claim 15
Dependent Claim
18 words
A supported catalyst in accordance with claim 10 wherein said transition metal is a Group VIII B metal.
Claim 16
Dependent Claim
36 words
A supported catalyst in accordance with claim 10 wherein said transition metal is distributed upon the surface thereof in a concentration of about 0.1 to 4 percent by weight based upon the weight of said support.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |