US4349462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic material
Assignee: SOHIO
•
Filing: 1980-12-24
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Granted: 1982-09-14
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Expires: 2000-12-24
Abstract
Abstract A fixed-bed catalytic material comprises iron impregnated Alundum carrying a coating of copper oxide on its outside surfaces. By means of the coating, the growth of carbon fibers as a result of the disproportionation of carbon monoxide is restricted to the interior surfaces of the catalyst particles.
Inventors
- 👤 Louis J. Velenyi
- 👤 Serge R. Dolhyj
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/745; B01J8/00; B01J8/02; B01J8/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A catalytic material comprising a particulate fixed-bed support material, the pore surfaces of the support material being coated with a Group VIII metal, the outside surfaces of said support material being coated with a powdery carbon growth-preventing material capable of preventing growth on said outside surfaces of carbon fibers by the disproportionation of carbon monoxide under conditions in which carbon fibers grow on said Group VIII metal-coated pore surfaces.
Claim 2
Dependent Claim
69 words
A catalytic material comprising a particulate fixed-bed support material, the pore surfaces of the support material being coated with a Group VIII metal, the outside surfaces of said support material being coated with a powdery carbon growth-preventing material capable of preventing growth on said outside surfaces of carbon fibers by the disproportionation of carbon monoxide under conditions in which carbon fibers grow on said Group VIII metal-coated pore surfaces.
Claim 3
Dependent Claim
27 words
The catalytic material of claim 1 wherein said growth preventing material is selected from the group consisting of copper oxide, copper metal, aluminum oxide and aluminum metal.
Claim 4
Dependent Claim
21 words
The catalytic material of claim 2 wherein said fixed-bed support material has a particle size of 1/32 inch to 1/2 inch.
Claim 5
Dependent Claim
32 words
The catalytic material of claim 3 wherein said fixed-bed support is selected from the group consisting of silica, alumina, silica/alumina, zeolites, zirconia, titania, hafnia, silicon carbide, boron phosphate, diatomaceous earth and pumice.
Claim 6
Dependent Claim
12 words
The catalytic material of claim 4 wherein said fixed-bed support is silica/alumina.
Claim 7
Dependent Claim
60 words
The catalytic material of claim 4 wherein said catalytic material is made by (1) wetting said support material with a liquid in an amount sufficient so that some of said liquid is absorbed on said support but not enough so that support particles are wet to the touch, and (2) agitating said support particles in said powdery carbon growth-preventing material.
Claim 8
Dependent Claim
60 words
The catalytic material of claim 1 wherein said catalytic material is made by (1) wetting said support material with a liquid in an amount sufficient so that some of said liquid is absorbed on said support but not enough so that support particles are wet to the touch, and (2) agitating said support particles in said powdery carbon growth-preventing material.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |