US3978000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts based on carbon supports
Assignee: Wyeth Holdings LLC
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Filing: 1975-03-19
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Granted: 1976-08-31
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Expires: 1995-03-19
Abstract
Abstract Carbon particulates comprising carbon black spheres and a carbon binder having large pores as well as desirable pore size distribution are disclosed which serve as catalyst supports. The support carrying an effective amount of an activator is an active catalyst composition for a variety of reactions including reduction reactions.
Inventors
- 👤 Joseph Lawrence Schmitt, Jr.
- 👤 Philip Leroy Walker, Jr.
- 👤 George Augustus Castellion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:09
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/18; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/384; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
70 words
A catalyst composition comprising a porous carbon particulate support comprising carbon black spheres in packed relationship and bonded with a carbonized binder, said spheres having a particle size in the range of about 80 to 5000 angstrom units and said particulate having a pore size distribution exhibiting peaks at a pore radius in excess of 10 angstrom units and, carried on said support, an effective amount of a catalytic activator.
Claim 2
Dependent Claim
70 words
A catalyst composition comprising a porous carbon particulate support comprising carbon black spheres in packed relationship and bonded with a carbonized binder, said spheres having a particle size in the range of about 80 to 5000 angstrom units and said particulate having a pore size distribution exhibiting peaks at a pore radius in excess of 10 angstrom units and, carried on said support, an effective amount of a catalytic activator.
Claim 3
Dependent Claim
22 words
The catalyst composition of claim 1 wherein said support has a pore volume of at least about 0.2 cubic centimeter per gram.
Claim 4
Dependent Claim
20 words
The catalyst composition of claim 1 wherein said support has a pore volume of about 0.4-1.0 cubic centimeter per gram.
Claim 5
Dependent Claim
21 words
The catalyst composition of claim 1 wherein said support has a composition of less than about 1 weight percent of ash.
Claim 6
Dependent Claim
23 words
The catalyst composition of claim 1 wherein said carbon black spheres have a particle size in the range of about 80-300 angstrom units.
Claim 7
Dependent Claim
26 words
The catalyst composition of claim 1 wherein said support has a pore size distribution exhibiting maximum pore radius in the range of about 40-100 angstrom units.
Claim 8
Dependent Claim
26 words
The catalyst composition of claim 1 wherein said support has a pore size distribution exhibiting peaks in the range of radii of about 10-250 angstrom units.
Claim 9
Dependent Claim
73 words
A catalyst composition comprising a porous carbon particulate support comprising carbon black spheres in packed relationship and bonded with a carbonized binder, said spheres having a particle size in the range of about 80 to 5000 angstrom units and said particulate having a pore size distribution exhibiting peaks at a pore radius in excess of 10 angstrom units and, carried on said support, an effective amount of at least one catalytically active metal.
Claim 10
Dependent Claim
73 words
A catalyst composition comprising a porous carbon particulate support comprising carbon black spheres in packed relationship and bonded with a carbonized binder, said spheres having a particle size in the range of about 80 to 5000 angstrom units and said particulate having a pore size distribution exhibiting peaks at a pore radius in excess of 10 angstrom units and, carried on said support, an effective amount of at least one catalytically active metal.
Claim 11
Dependent Claim
14 words
The catalyst composition of claim 1 wherein said activator is a platinum group metal.
Claim 12
Dependent Claim
14 words
The catalyst composition of claim 2 wherein said activator is a platinum group metal.
Claim 13
Dependent Claim
14 words
The catalyst composition of claim 3 wherein said activator is a platinum group metal.
Claim 14
Dependent Claim
14 words
The catalyst composition of claim 4 wherein said activator is a platinum group metal.
Claim 15
Dependent Claim
14 words
The catalyst composition of claim 5 wherein said activator is a platinum group metal.
Claim 16
Dependent Claim
14 words
The catalyst composition of claim 6 wherein said activator is a platinum group metal.
Claim 17
Dependent Claim
14 words
The catalyst composition of claim 7 wherein said activator is a platinum group metal.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |