US4250060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas making calcined catalyst precursors of nickel, alumina, sodium and potassium
Assignee: British Gas Corp
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Filing: 1979-06-18
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Granted: 1981-02-10
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Expires: 1999-06-18
Abstract
Abstract A catalyst precursor which when reduced can produce a catalyst suitable for the high pressure gasification of heavy hydrocarbons to produce methane-containing gases comprises a calcined coprecipitated-alumina containing from 50-65% Ni precursor. The catalyst contains (1) from 0 to not more than 0.43% K and from 0 to not more than 0.1% Na, (2) the combined weights of Na+K does not exceed 0.011 gm atoms/100 gm of catalyst, precursor (3) the ratio of Na: K falls within the area defined by ABCDEO in FIG. 1 of the drawings and (3) at combined Na+K weights of from 0 to 0.05% the water loss is not more than 11.2%. The catalyst precursors are prepared with the aid of a filtering aid selected from (NH 4 ) 2 CO 3 , Na 2 CO 3 , K 2 CO 3 , Na NO 3 or K NO 3 to obtain low levels of alkali. The final catalyst may be employed for steam reforming reactions to produce methane-containing gases.
Inventors
- 👤 Reginald G. S. Banks
- 👤 Alan Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J37/00; B01J37/02; B01J37/03; C10; C10G; C10G11/00; C10G11/02; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1058; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
A catalyst precursor which when reduced will produce a catalyst which is resistant to deactivation by polymer formation or by sintering and is therefore advantageously suitable for reforming hydrocarbons with steam at high pressures to produce methane-containing gases, said catalyst precursor consisting essentially of a calcined mixture of nickel, alumina, sodium and potassium, said catalyst precursor having been formed by co-precipitation from water solution utilizing sodium or potassium precipitants in the essential absence of chemical species having a deleterious effect upon the performance of the catalyst, wherein the nickel content in the catalyst precursor ranges from 50 to 65% by weight of the total weight of the catalyst precursor and wherein (1) the total combined weight of sodium and potassium does not exceed 0.011 gm atoms/100 gm of catalyst precursor, (2) at combined sodium and potassium contents of up to 0.05% by weight of the catalyst precursor, the water loss is not more than 11.2, and (3) the ratio of sodium to potassium, expressed as a gram atom percentage, is ##EQU3##
Claim 2
Dependent Claim
171 words
A catalyst precursor which when reduced will produce a catalyst which is resistant to deactivation by polymer formation or by sintering and is therefore advantageously suitable for reforming hydrocarbons with steam at high pressures to produce methane-containing gases, said catalyst precursor consisting essentially of a calcined mixture of nickel, alumina, sodium and potassium, said catalyst precursor having been formed by co-precipitation from water solution utilizing sodium or potassium precipitants in the essential absence of chemical species having a deleterious effect upon the performance of the catalyst, wherein the nickel content in the catalyst precursor ranges from 50 to 65% by weight of the total weight of the catalyst precursor and wherein (1) the total combined weight of sodium and potassium does not exceed 0.011 gm atoms/100 gm of catalyst precursor, (2) at combined sodium and potassium contents of up to 0.05% by weight of the catalyst precursor, the water loss is not more than 11.2, and (3) the ratio of sodium to potassium, expressed as a gram atom percentage, is ##EQU3##
Claim 3
Dependent Claim
26 words
A catalyst precursor as claimed in claim 1, wherein the weight ratio of nickel to alumina ranges from 2.8 to 3.2 Ni:1Al 2 O 3 .
Claim 4
Dependent Claim
24 words
A catalyst precursor as claimed in claim 1, wherein the alkali metal concentration ranges from 0.2 to 0.3% K and less than 0.01% Na.
Claim 5
Dependent Claim
18 words
A catalyst precursor as claimed in claim 1, containing less than 0.01% K and less than 0.01% Na.
Claim 6
Dependent Claim
18 words
A catalyst precursor as claimed in claim 4, wherein the water loss value ranges from 11.2 to 9.
References Cited (Backward Citations)
FR1438233A
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US3320182A
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FR2206299B3
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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) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |