Patent US3904554A successfully refreshed from Google Patents.
US3904554A
Expired / Lapsed
US
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Catalyst of ruthenium and zinc oxide on alumina carrier for steam reforming hydrocarbons
Assignee: British Gas PLC
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Filing: 1973-01-26
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Granted: 1975-09-09
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Expires: 1993-01-26
Abstract
Abstract A catalyst composition is disclosed which consists essentially of (i) ruthenium or a compound thereof, (ii) zinc oxide or a zinc compound and (iii) a carrier. Preferably the composition consists essentially of (i) from 1 to 20 percent by weight ruthenium, (ii) from 30 to 50 percent by weight zinc oxide and (iii) from 65 to 35 percent by weight catalyst carrier, the percentages being percentages by weight of the total composition. The catalyst compositions of the present invention may be used in the synthesis of methane, and in the steam reforming or hydroreforming of hydrocarbons.
Inventors
- 👤 Andrew Leslie Dicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/60; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C01B2203/00; C01B2203/10; C01B2203/1005; C01B2203/1011; C01B2203/1041; C01B2203/1047; C01B2203/1064; C01B2203/1082; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A CATALYST COMPOSITION FOR STEAM REFORMING HYDROCARBONS TO PRODUCE GASES CONTAINING A MAJOR PROPORTION OF METHANE, SAID COMPOSITION COMPRISING (I) FROM 1 TO TO 20% BY WEIGHT OF THE TOTAL COMPOSITION OF RUTHENIUM, (II) FROM 30 TO 50% BY WEIGHT OF THE TOTAL COMPOSITION OF ZINC OXIDE AND(III) FROM 65 TO 35% BY WEIGHT OF THE TOTAL COMPOSITION OF ALUMINA CARRIER, SAID CATALYST BEING PREPARED BY COPRECIPITATION FROM A SOLUTION OF WATER SOLUBLE SALTS OF RUTHENIUM ZINC AND ALUMINIUM.
Claim 2
Dependent Claim
79 words
A CATALYST COMPOSITION FOR STEAM REFORMING HYDROCARBONS TO PRODUCE GASES CONTAINING A MAJOR PROPORTION OF METHANE, SAID COMPOSITION COMPRISING (I) FROM 1 TO TO 20% BY WEIGHT OF THE TOTAL COMPOSITION OF RUTHENIUM, (II) FROM 30 TO 50% BY WEIGHT OF THE TOTAL COMPOSITION OF ZINC OXIDE AND(III) FROM 65 TO 35% BY WEIGHT OF THE TOTAL COMPOSITION OF ALUMINA CARRIER, SAID CATALYST BEING PREPARED BY COPRECIPITATION FROM A SOLUTION OF WATER SOLUBLE SALTS OF RUTHENIUM ZINC AND ALUMINIUM.
Claim 3
Dependent Claim
22 words
A composition as claimed in claim 1 wherein the ruthenium content is from 5 to 10% by weight of the total composition.
Claim 4
Dependent Claim
48 words
A process for the preparation of a composition as claimed in claim 1 which consists essentially of adding a precipitant selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate and mixtures thereof to a solution of water soluble aluminium, zinc and ruthenium salts.
Claim 5
Dependent Claim
42 words
A process for the preparation of a composition as claimed in claim 1 which process consists essentially of mixing an alkaline solution of a perruthenate with an aqueous solution of zinc and aluminium salts, thereby co-precipitating said ruthenium, alumina and zinc oxide.
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |