Patent US4460704A successfully refreshed from Google Patents.
US4460704A
Expired / Lapsed
US
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Catalyst for the production of hydrogen
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-06-11
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Granted: 1984-07-17
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Expires: 2001-06-11
Abstract
Abstract A catalyst for producing hydrogen by reacting in the gaseous phase a hydrocarbon, hydrocarbon derivative or carbon monoxide with steam and/or if appropriate, carbon dioxide is in the form of hollow pieces each having walls 0.5 to 2 mm thick and comprising a primary support of low pore volume and a secondary support of relatively high surface area. The hollow pieces preferably are partitioned rings and are especially useful in hydrocarbon steam reforming because they can afford high catalytic activity at relatively low active metal content, high mechanical strength and low pressure drop.
Inventors
- 👤 Martyn V. Twigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:16
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J23/76; B01J23/83; B01J35/00; B01J35/30; B01J35/34; B01J35/37; B01J35/50; B01J35/55; B01J35/56; B01J37/00; B01J37/02; B01J37/024; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B01J2235/00; B01J2235/15; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1076; C01B2203/1082; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
A catalyst for producing a gas containing hydrogen by reacting in the gaseous phase a hydrocarbon, hydrocarbon derivative or carbon monoxide with steam and/or, where appropriate, carbon dioxide, in the form of hollow cylinders having walls 0.5 to 3 mm thick, each said cylinder comprising a primary support made of refractory material having a pore volume less than 0.3 cm 3 g -1 and a surface area less than 10 m 2 g -1 and a coating thereon of a secondary support made of refractory oxidic material having a pore volume greater than 0.3 cm 3 g -1 and an internal surface area in the range 15-300 m 2 g -1 , said secondary support having deposited thereon a catalyst comprising nickel and/or cobalt.
Claim 2
Dependent Claim
124 words
A catalyst for producing a gas containing hydrogen by reacting in the gaseous phase a hydrocarbon, hydrocarbon derivative or carbon monoxide with steam and/or, where appropriate, carbon dioxide, in the form of hollow cylinders having walls 0.5 to 3 mm thick, each said cylinder comprising a primary support made of refractory material having a pore volume less than 0.3 cm 3 g -1 and a surface area less than 10 m 2 g -1 and a coating thereon of a secondary support made of refractory oxidic material having a pore volume greater than 0.3 cm 3 g -1 and an internal surface area in the range 15-300 m 2 g -1 , said secondary support having deposited thereon a catalyst comprising nickel and/or cobalt.
Claim 3
Dependent Claim
24 words
A catalyst according to claim 1 in which the pore volume of the primary support is less than 0.18 cm 3 g -1 .
Claim 4
Dependent Claim
27 words
A catalyst according to claim 1 in which the surface area of the primary support is in the range 0.01 to 2.0 m 2 g -1 .
Claim 5
Dependent Claim
30 words
A catalyst according to claim 1, 2 or 3 in which the surface area of the secondary support is in the range 50 to 200 m 2 g -1 .
Claim 6
Dependent Claim
20 words
A catalyst according to claim 1 in the form of hollow cylinders having 5 or 7 inwardly projecting radial partitions.
Claim 7
Dependent Claim
47 words
A catalyst according to claim 1 in the form of hollow cylinders having through passages defined by partitions having the cross-section of chords intersecting one another in pairs at points distanced from the circumference and centre of the circle in a plane perpendicular to the cylinder axis.
Claim 8
Dependent Claim
25 words
A catalyst according to claim 1 in which the secondary support comprises 0.1 to 5.0% W /W of an oxide of a rare earth metal.
Claim 9
Dependent Claim
35 words
A catalyst according to claim 1 and intended for a process starting from a hydrocarbon, in which the nickel and/or cobalt is present to the extent of 1 to 6% W /W calculated as monoxide.
Claim 10
Dependent Claim
24 words
A catalyst as in claim 1 wherein the nickel and/or cobalt content in within the range 0.2 to 35% W /W calculated as monoxide.
Claim 11
Dependent Claim
24 words
A catalyst as in claim 1 wherein the nickel and/or cobalt content is within the range 1 to 25% W /W calculated as monoxide.
Claim 12
Dependent Claim
24 words
A catalyst as in claim 1 wherein the nickel and/or cobalt content is within the range 0.5 to 8.0% W /W calculated as monoxide.
Claim 13
Dependent Claim
24 words
A catalyst as in claim 1 wherein the nickel and/or cobalt content is within the range 1 to 6% W /W calculated as monoxide.
Claim 14
Dependent Claim
24 words
A catalyst as in claim 1 wherein the nickel and/or cobalt content is within the range 1 to 4% W /W calculated as monoxide.
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |