US4096164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing ethanol, acetic acid and/or acetaldehyde, from synthesis gas
Assignee: Union Carbide Corp
•
Filing: 1976-08-30
•
Granted: 1978-06-20
•
Expires: 1996-08-30
Abstract
Abstract A process for selectively preparing a mixture of two-carbon atom oxygenated hydrocarbons in which ethanol is the major component which comprises continuously contacting a reaction mixture containing hydrogen and carbon monoxide with a solid catalyst comprising rhodium in combination with molybdenum and/or tungsten at reaction conditions correlated so as to favor the formation of such two-carbon atom products, namely, acetic acid, acetaldehyde, and/or ethanol.
Inventors
- 👤 Paul Clifford Ellgen
- 👤 Madan Mohan Bhasin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:01
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157; C07C29/158; C07C29/1512; C07C45/00; C07C45/49; C07C51/00; C07C51/10; C12; C12C; C12C11/00; C12C11/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
In a process for the reaction of a synthesis gas containing carbon monoxide and hydrogen in the presence of a hydrogenation catalyst, the improvement for selectively producing two-carbon atom oxygenated hydrocarbon products which comprises continuously contacting said synthesis gas with a heterogeneous catalyst comprising rhodium in combination with at least one element selected from the group consisting of molybdenum and tungsten at reaction conditions correlated to achieve product efficiencies based on carbon consumption in excess of 10 percent and obtain the formation of ethanol, acetic acid, and/or acetaldehyde in an amount which is at least about 50 weight percent of the two or more carbon atom compounds obtained by the reaction, which reaction conditions include a temperature within the range of from about 150°-450° C., a pressure within the range of from about 15-10,000 psig, and a mole ratio of hydrogen to carbon monoxide within the range of from about 20:1 to 1:200.
Claim 2
Dependent Claim
153 words
In a process for the reaction of a synthesis gas containing carbon monoxide and hydrogen in the presence of a hydrogenation catalyst, the improvement for selectively producing two-carbon atom oxygenated hydrocarbon products which comprises continuously contacting said synthesis gas with a heterogeneous catalyst comprising rhodium in combination with at least one element selected from the group consisting of molybdenum and tungsten at reaction conditions correlated to achieve product efficiencies based on carbon consumption in excess of 10 percent and obtain the formation of ethanol, acetic acid, and/or acetaldehyde in an amount which is at least about 50 weight percent of the two or more carbon atom compounds obtained by the reaction, which reaction conditions include a temperature within the range of from about 150°-450° C., a pressure within the range of from about 15-10,000 psig, and a mole ratio of hydrogen to carbon monoxide within the range of from about 20:1 to 1:200.
Claim 3
Dependent Claim
44 words
Process of claim 1 wherein said reaction conditions include a temperature within the range of about 250°-350° C., a pressure within the range of about 300-5,000 psig, and a mole ratio of hydrogen to carbon monoxide within the range of about 5:1 to 1:5.
Claim 4
Dependent Claim
10 words
Process of claim 1 wherein said catalyst additionally contains manganese.
Claim 5
Dependent Claim
20 words
Process of claim 1 wherein the space velocity of the synthesis gas is in excess of about 10 3 GHSV.
Claim 6
Dependent Claim
20 words
Process of claim 1 wherein the space velocity is within the range of about 10 4 to 10 6 GHSV.
References Cited (Backward Citations)
US3988334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |