US4897253A
Expired / Lapsed
US
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Catalytic generation of hydrogen from hydrocarbons
Assignee: Johnson Matthey PLC
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Filing: 1987-09-29
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Granted: 1990-01-30
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Expires: 2007-09-29
Abstract
Abstract A catalytic process for the generation of hydrogen by the partial oxidation of hydrocarbons, especially alkanes such as methane or hexane. The preferred catalyst system comprises from 0.01 to 5 wt % platinum and from 1 to 15 wt % chromium oxide supported on a refractory solid such as silica. Also a reactor for effecting the process in which the reactants are injected into or among the catalyst system and a technique for starting the process at ambient temperature by introducing an initiating compound such as methanol into the catalyst system.
Inventors
- 👤 John W. Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:38
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522; B01J8/00; B01J8/02; B01J8/0278; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C01B2203/00; C01B2203/02; C01B2203/025; C01B2203/0261; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1064; C01B2203/107; C01B2203/1082; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/1247; C01B2203/16; C01B2203/1604; C01B2203/1614; C01B2203/1619; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A process for generating hydrogen by the partial oxidation of a hydrocarbon, which process does not require the application of external heat for the process to proceed, and which comprises injecting into at least one point amongst a mass of a catalyst consisting essentially of platinum and chromium oxide supported on a refractory solid catalyst support, a mixture comprising a hydrocarbon and oxygen, the point of injection having a local temperature of from 700° to 1000° C. the hydrocarbon reacting with the oxygen to generate said hydrogen.
Claim 2
Dependent Claim
87 words
A process for generating hydrogen by the partial oxidation of a hydrocarbon, which process does not require the application of external heat for the process to proceed, and which comprises injecting into at least one point amongst a mass of a catalyst consisting essentially of platinum and chromium oxide supported on a refractory solid catalyst support, a mixture comprising a hydrocarbon and oxygen, the point of injection having a local temperature of from 700° to 1000° C. the hydrocarbon reacting with the oxygen to generate said hydrogen.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1, wherein the catalyst contains from 0.01 to 5 wt% platinum based on the total weight of the catalyst.
Claim 4
Dependent Claim
25 words
A process as claimed in claim 1, wherein the catalyst contains from 1 to 15 wt% chromium based on the total weight of the catalyst.
Claim 5
Dependent Claim
13 words
A process as claimed in claim 1, wherein the refractory solid is silica.
Claim 6
Dependent Claim
17 words
A process as claimed in claim 1, wherein the hydrocarbon has from 1 to 15 carbon atoms.
Claim 7
Dependent Claim
25 words
A process as claimed in claim 5, wherein the hydrocarbon is selected from C 1 to C 6 alkanes, naphthas, and petrol and diesel fuels.
Claim 8
Dependent Claim
30 words
A process as claimed in claim 1, which is initiated without the application of external heat by introducing an initiating compound more easily oxidizable than the hydrocarbon into the catalyst.
Claim 9
Dependent Claim
17 words
A process as claimed in claim 7, wherein the initiating compound is selected from methanol and hydrogen.
Claim 10
Dependent Claim
25 words
A process as claimed in claim 2, wherein the catalyst contains from 0.25 to 2 wt% platinum based on the total weight of the catalyst.
Claim 11
Dependent Claim
16 words
A process as claimed in claim 7 which is conducted without the application of external heat.
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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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |