Patent US3689575A successfully refreshed from Google Patents.
US3689575A
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Methanol synthesis
Assignee: Bethlehem Steel Corp
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Filing: 1970-12-11
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Granted: 1972-09-05
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Expires: 1990-12-11
Abstract
Abstract A process for the synthesis of methanol in which water in liquid is reacted with gaseous carbon monoxide in the presence of a select carbon monoxide shift catalyst at temperatures of 180*380* C. and pressures above about 250 atmospheres.
Inventors
- 👤 Mehmet Orhan Tarhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:33
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/159; C07C29/151; C07C29/153; C07C29/154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A process for synthesizing methanol comprising: a. forming a mixture of liquid water and a catalyst selected from the group consisting of the prereduced mixed oxides of copper and zinc, copper and chromium, and copper, zinc and chromium, b. introducing carbon monoxide into the mixture; c. reacting the carbon monoxide with the mixture at a temperature of about 180* to a bout 380* C. and a pressure of about 250 atmospheres to about 700 atmospheres to form methanol.
Claim 2
Dependent Claim
42 words
A process for synthesizing methanol comprising reacting liquid water with carbon monoxide in the presence of a catalyst consisting of the prereduced mixed oxides of copper and zinc at a temperature of about 300* C. and a pressure of about 420 atmospheres.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |