US4415749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for the selective formation of ethanol and methyl acetate from methanol and synthesis gas
Assignee: Ethyl Corp
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Filing: 1981-09-15
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Granted: 1983-11-15
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Expires: 2001-09-15
Abstract
Abstract A process for the selective formation of ethanol and methyl acetate by contacting methanol, hydrogen and carbon monoxide with a catalyst comprising rhodium and iron in the reduced state deposited on a support of alumina containing a minor amount of an alkaline metal at reaction conditions correlated so as to favor the formation of a substantial proportion of ethanol and methyl acetate.
Inventors
- 👤 Duane C. Hargis
- 👤 Michael Dubeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/32; B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8906; B01J23/8933; B01J23/8946; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
A process for selectively producing ethanol and methyl acetate which comprises reacting methanol with carbon monoxide and hydrogen in the presence of a heterogeneous catalyst comprising rhodium and iron each in the zero valent state deposited on a support of alumina impregnated with a minor amount of an alkaline metal selected from the alkaline metals of Groups I and II of the Periodic Table at reaction conditions of about 225° C. to about 300° C. and pressure within the range of from about 50 psig to about 250 psig.
Claim 2
Dependent Claim
89 words
A process for selectively producing ethanol and methyl acetate which comprises reacting methanol with carbon monoxide and hydrogen in the presence of a heterogeneous catalyst comprising rhodium and iron each in the zero valent state deposited on a support of alumina impregnated with a minor amount of an alkaline metal selected from the alkaline metals of Groups I and II of the Periodic Table at reaction conditions of about 225° C. to about 300° C. and pressure within the range of from about 50 psig to about 250 psig.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein said reaction conditions include a space velocity of from about 800 to about 2000 GHSV and a mole ratio of hydrogen to carbon monoxide to methanol of 1:1:1.
Claim 4
Dependent Claim
46 words
The process of claim 1 where said catalyst contains from about 1.0 to about 10.0 weight percent rhodium; from about 1.0 to about 10.0 weight percent iron and from about 0.1 to about 5.0 weight percent alkaline metal based on the total weight of the catalyst.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein said alkaline metal is sodium.
Claim 6
Dependent Claim
11 words
The process of claim 3 wherein said alkaline metal is calcium.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein said support is selected from the group consisting of alpha alumina, gamma alumina and eta alumina.
References Cited (Backward Citations)
US3248432A
Cited
US3285948A
Cited
US3717670A
Cited
US3661949A
Cited
US4132734A
Cited
US4133966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |