US3947381A
Expired / Lapsed
US
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Method of making a catalyst
Assignee: Imperial Chemical Industries Ltd
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Filing: 1973-12-17
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Granted: 1976-03-30
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Expires: 1993-12-17
Abstract
Abstract A catalyst comprising a metal from Group VIII of the Periodic Table, a hydraulic binding agent and alumina in the form of sheets of fine crystallites is suitable for the removal, by methanation, of carbon oxides from hydrogen-containing gases or of hydrogen from synthetic methane.
Inventors
- 👤 John Stewart Campbell
- 👤 Phineas Davies
- 👤 John Russell Richmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:53
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C10; C10K; C10K3/00; C10K3/02; C10K3/04; B01J37/02; B01J37/03; B01J37/031; C07; C07C; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
A method of making a catalyst which comprises mixing together, in finely-powdered form, a Group VIII metal oxide, a hydraulic binding agent, forming the mixture into compressed pellets having a pellet density in the range of 0.9 to 1.3, treating said pellets with water or steam or both, then drying and reducing with a reducing agent at 200°-400°C.
Claim 2
Independent Claim
58 words
A method of making a catalyst which comprises mixing together, in finely-powdered form, a Group VIII metal oxide, a hydraulic binding agent, forming the mixture into compressed pellets having a pellet density in the range of 0.9 to 1.3, treating said pellets with water or steam or both, then drying and reducing with a reducing agent at 200°-400°C.
Claim 3
Dependent Claim
18 words
A method according to claim 1 in which the mixture is calcined at 300°-500°C after forming said pellets.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |