US4175115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of synthesis gas by the catalyzed decomposition of methanol
Assignee: BP PLC
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Filing: 1978-05-26
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Granted: 1979-11-20
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Expires: 1998-05-26
Abstract
Abstract Synthesis gas is produced by contacting methanol in the vapor phase with a catalyst which is a supported metal of Group VIII of the Periodic Table either alone or in combination with one or more other metals from Groups I to VIII, excluding binary combinations of copper and nickel, typically at a temperature in the range 200° to 600° C. and at a pressure in the range 0 to 50 atmospheres. The best results are achieved with a mixture of rhodium and copper supported on silica, a 100% molar yield of carbon monoxide on methanol fed being obtained at 450° C., atmospheric pressure and 3.5 second contact time.
Inventors
- 👤 William J. Ball
- 👤 David G. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:29
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1064; C01B2203/1076; C01B2203/1082; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
105 words
A process for the production of hydrogen and carbon monoxide comprising contacting essentially anhydrous methanol in the vapor phase with a supported catalyst at a temperature in the range of about 200° to 600° C., a pressure in the range of from about 0 to 50 atmospheres and a contact time up to 30 seconds, said supported catalyst containing a metal of Group VIII of the Periodic Table and another metal of Group IB, Group II, Group VIB or Group VIII of the Periodic Table, excluding binary combinations of copper and nickel, and said metals constituting from 0.1 to 20% by weight of said catalyst.
Claim 2
Dependent Claim
105 words
A process for the production of hydrogen and carbon monoxide comprising contacting essentially anhydrous methanol in the vapor phase with a supported catalyst at a temperature in the range of about 200° to 600° C., a pressure in the range of from about 0 to 50 atmospheres and a contact time up to 30 seconds, said supported catalyst containing a metal of Group VIII of the Periodic Table and another metal of Group IB, Group II, Group VIB or Group VIII of the Periodic Table, excluding binary combinations of copper and nickel, and said metals constituting from 0.1 to 20% by weight of said catalyst.
Claim 3
Dependent Claim
11 words
A process according to claim 1 wherein said methanol is anhydrous.
Claim 4
Dependent Claim
22 words
A process according to claim 1 wherein said methanol is diluted with a diluent selected from carbon monoxide, carbon dioxide and hydrogen.
Claim 5
Dependent Claim
27 words
A process according to claim 1 wherein said support is selected from silica, alumina, a mixture of silica and alumina, titania, zirconia, natural zeolites and synthetic zeolites.
Claim 6
Dependent Claim
11 words
A process according to claim 1 wherein said support is silica.
Claim 7
Dependent Claim
22 words
A process according to claim 1 wherein said metal of Group VIII of the Periodic Table is selected from rhodium and cobalt.
Claim 8
Dependent Claim
42 words
A process according to claim 1 wherein said supported catalyst contains one or more metals selected from Group VIII of the Periodic Table in combination with one or more metals selected from the group consisting of iron, copper, chromium, gold and zinc.
Claim 9
Dependent Claim
19 words
A process according to claim 1 wherein said catalyst is a mixture of rhodium and copper supported on silica.
Claim 10
Dependent Claim
19 words
A process according to claim 1 wherein said metal constitutes from 0.2 to 10% by weight of the catalyst.
Claim 11
Dependent Claim
17 words
A process according to claim 1 wherein said temperature is in the range 300° to 450° C.
Claim 12
Dependent Claim
18 words
A process according to claim 1 wherein said contact time is in the range 1 to 5 seconds.
Claim 13
Dependent Claim
19 words
A process as defined in claim 1 wherein said metal of Group VIII of the Periodic Table in rhodium.
Claim 14
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is iron.
Claim 15
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is chromium.
Claim 16
Dependent Claim
14 words
A process as defined in claim 12 wherein said other metal is gold. pg,17
Claim 17
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is cobalt.
Claim 18
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is copper.
Claim 19
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is nickel.
Claim 20
Dependent Claim
13 words
A process as defined in claim 12 wherein said other metal is thorium.
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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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |