US4609441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical reduction of aqueous carbon dioxide to methanol
Assignee: Gas Technology Institute
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Filing: 1985-12-18
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Granted: 1986-09-02
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Expires: 2005-12-18
Abstract
Abstract A method of producing methanol from carbon dioxide is set forth. A solution of carbon dioxide in an aqueous solvent having electrolyte dissolved therein is electrolyzed utilizing a molybdenum cathode. Faradaic efficiency is generally quite high and without detectable corrosion.
Inventors
- 👤 Karl W. Frese, Jr.
- 👤 Steven C. Leach
- 👤 David P. Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/25; C25B3/26; C25B3/01; C25B3/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A method of producing methanol from carbon dioxide, comprising: electrolyzing a solution of carbon dioxide in an aqueous solvent having an electrolyte therein and utilizing a cathode which comprises molybdenum to produce methanol.
Claim 2
Independent Claim
33 words
A method of producing methanol from carbon dioxide, comprising: electrolyzing a solution of carbon dioxide in an aqueous solvent having an electrolyte therein and utilizing a cathode which comprises molybdenum to produce methanol.
Claim 3
Dependent Claim
24 words
A method as set forth in claim 1, wherein the pH of the solution falls within the range from about 0 to about 7.
Claim 4
Dependent Claim
28 words
A method as set forth in claim 1, wherein the cathode is controlled to have a voltage from about -0.5 V to about -1.1 V relative to SCE.
References Cited (Backward Citations)
US3959094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |