US4407238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methanol dissociation using a copper-chromium-manganese catalyst
Assignee: C0NSOLIDATION COAL Co
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Filing: 1981-10-26
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Granted: 1983-10-04
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Expires: 2001-10-26
Abstract
Abstract A process for the production of hydrogen and carbon monoxide comprising contacting methanol in the vapor phase with a catalyst at a temperature in the range of about 250° to 900° F., a pressure in the range of from 0.1 to 50 atmospheres absolute and a contact time of 0.1 to 100 seconds whereby hydrogen and carbon monoxide are formed, said catalyst comprising manganese, copper and chromium.
Inventors
- 👤 Heeyoung Yoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:35
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; C; C01; C01B; C01B3/00; C01B3/02; C01B3/22; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A method of endothermic dissociation of methanol to hydrogen and combustion thereof in an internal combustion engine comprising the steps of: (a) providing a liquid methanol fuel, said liquid fuel being substantially methanol and comprising no substantial amount of water and comprising molecular oxygen in at most an insubstantial amount, (b) providing catalytic reactor means, said catalytic reactor means containing a catalyst consisting essentially of manganese, copper and chromium, (c) providing an internal combustion engine means, (d) vaporizing said liquid fuel to form a vapor fuel, (e) dissociating said vapor fuel in said catalytic reactor means to form a hydrogen rich gaseous fuel, (f) mixing said hydrogen rich gaseous fuel with air to form a gaseous combustion mixture comprising hydrogen and oxygen, (g) combusting said gaseous combustion mixture in said internal combustion engine means, whereby methanol is dissociated to hydrogen which is then combusted in said internal combustion engine.
Claim 2
Independent Claim
149 words
A method of endothermic dissociation of methanol to hydrogen and combustion thereof in an internal combustion engine comprising the steps of: (a) providing a liquid methanol fuel, said liquid fuel being substantially methanol and comprising no substantial amount of water and comprising molecular oxygen in at most an insubstantial amount, (b) providing catalytic reactor means, said catalytic reactor means containing a catalyst consisting essentially of manganese, copper and chromium, (c) providing an internal combustion engine means, (d) vaporizing said liquid fuel to form a vapor fuel, (e) dissociating said vapor fuel in said catalytic reactor means to form a hydrogen rich gaseous fuel, (f) mixing said hydrogen rich gaseous fuel with air to form a gaseous combustion mixture comprising hydrogen and oxygen, (g) combusting said gaseous combustion mixture in said internal combustion engine means, whereby methanol is dissociated to hydrogen which is then combusted in said internal combustion engine.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said catalyst is supported by alumina or silica.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said temperature is 300° to 600° F.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein said catalyst further comprises oxides of manganese, copper and chromium.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said pressure is in the range of from 0.1 to 5 atmospheres absolute.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein said catalyst is 5 to 70 percent copper, 2 to 70 percent chromium and 0.1 to 30 percent manganese.
Claim 8
Dependent Claim
30 words
The process of claim 1 wherein said temperature is in the range of 400° to 550° F. and said pressure is in the range of 0.1 to 5 atmospheres absolute.
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |