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US4415749A
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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 22:03
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
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US3717670A
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US3661949A
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US4132734A
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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 |