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Patent US3939191A successfully refreshed from Google Patents.
US3939191A
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Process for methanol synthesis
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1973-12-18
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Granted: 1976-02-17
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Expires: 1993-12-18
Abstract
Abstract Catalyst comprising oxides of copper, zinc and boron in an atomic ratio of copper: zinc: boron of 20 to 70: 15 to 50: 0.3 to 5.3 is used for methanol synthesis from hydrogen and carbon oxides at a reaction pressure of 20 to 500 kg/cm2, reaction temperature of 150 DEG to 350 DEG C and space velocity of 2,000 to 5 x 104 hr<->1.
Inventors
- 👤 Setunobu Asano
- 👤 Tadasi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:55
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/80; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/154; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
In a process for synthesizing methanol by the reaction of hydrogen and an oxide of carbon, the improvement which comprises carrying out the reaction in the presence of a catalyst comprising oxides of copper, zinc and boron in an atomic ratio of copper: zinc: boron of 20 to 70: 15 to 50: 0.3 to 5.3 at a reaction pressure of 20 to 500 kg/cm 2 , a reaction temperature of 150° to 350°C and a space velocity of 2,000
Claim 2
Dependent Claim
79 words
In a process for synthesizing methanol by the reaction of hydrogen and an oxide of carbon, the improvement which comprises carrying out the reaction in the presence of a catalyst comprising oxides of copper, zinc and boron in an atomic ratio of copper: zinc: boron of 20 to 70: 15 to 50: 0.3 to 5.3 at a reaction pressure of 20 to 500 kg/cm 2 , a reaction temperature of 150° to 350°C and a space velocity of 2,000
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein the reaction pressure is 30 to 150 kg/cm 2 and the reaction temperature is 200° to 280°C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |