US4171461A
Expired / Lapsed
US
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Synthesis of ethanol by homologation of methanol
Assignee: Air Products and Chemicals Inc
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Filing: 1978-09-01
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Granted: 1979-10-16
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Expires: 1998-09-01
Abstract
Abstract This invention relates to an improvement in a process for producing ethanol by methanol homologation. The homologation is carried out by reacting methanol with hydrogen and carbon monoxide in a 1-2:1 mole ratio and a temperature of from about 175-230° C. and a pressure of 2,000-10,000 psig in the presence of a cobalt catalyst represented by formulas I and II. ##STR1##
Inventors
- 👤 Charles M. Bartish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:12
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
In an homologation process for the synthesis of ethanol wherein methanol is reacted in liquid phase with carbon monoxide and hydrogen in the presence of a cobalt catalyst, the improvement which comprises employing as said cobalt catalyst a solid phase cobalt compound represented by formulas I and II below: ##STR4##
Claim 2
Dependent Claim
50 words
In an homologation process for the synthesis of ethanol wherein methanol is reacted in liquid phase with carbon monoxide and hydrogen in the presence of a cobalt catalyst, the improvement which comprises employing as said cobalt catalyst a solid phase cobalt compound represented by formulas I and II below: ##STR4##
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein the molar concentration of cobalt employed in said homologation reaction is from 0.01-0.5 moles per mole of methanol.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the temperature for effecting reaction is from about 175-230° C.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein the pressure utilized for said reaction is from about 2,000-10,000 psig.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein the cobalt catalyst employed is that of formula II.
Claim 7
Dependent Claim
21 words
The process of claim 5 wherein said cobalt compound is present to provide from 0.04-0.07 moles cobalt per mole of methanol.
References Cited (Backward Citations)
US3248432A
Cited
US3285948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |