Patent US4613623A successfully refreshed from Google Patents.
US4613623A
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Low temperature synthesis of methyl formate
Assignee: United States Department of Energy
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Filing: 1985-07-23
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Granted: 1986-09-23
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Expires: 2005-07-23
Abstract
Abstract A gas reaction process for the preferential production of methyl formate over the co-production of methanol wherein the reactant ratio of CO/H 2 is upgraded and this reaction takes place at low temperatures of 50°-150° C. and moderate pressures of ≧100 psi.
Inventors
- 👤 Devinder Mahajan
- 👤 William A. Slegeir
- 👤 Richard S. Sapienza
- 👤 Thomas E. O'Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:26
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
In the simultaneously occuring gas reactions (a) 2CO+2H 2 →HCOOCH 3 and (b) CO+2H 2 →CH 3 OH catalyzed by a catalyst system composed of a complex reducing agent of the formula XH--ROH--M(OAc) 2 wherein X is an alkali metal, M is selected from the group consisting of Ni, Pd or Co and R is a lower alkyl group containing 1-6 carbon atoms and a Group VI metal carbonyl, the improvement which favors driving the reaction to the right in (a) which comprises using said catalyst system as a homogeneous liquid phase catalyst and pressurizing the system which synthesis gas containing about an equimolar amount v/v of CO to the H 2 reactant so that the product ratio of HCOOCH 3 /CH 3 OH will be up to 1:1.
Claim 2
Dependent Claim
129 words
In the simultaneously occuring gas reactions (a) 2CO+2H 2 →HCOOCH 3 and (b) CO+2H 2 →CH 3 OH catalyzed by a catalyst system composed of a complex reducing agent of the formula XH--ROH--M(OAc) 2 wherein X is an alkali metal, M is selected from the group consisting of Ni, Pd or Co and R is a lower alkyl group containing 1-6 carbon atoms and a Group VI metal carbonyl, the improvement which favors driving the reaction to the right in (a) which comprises using said catalyst system as a homogeneous liquid phase catalyst and pressurizing the system which synthesis gas containing about an equimolar amount v/v of CO to the H 2 reactant so that the product ratio of HCOOCH 3 /CH 3 OH will be up to 1:1.
Claim 3
Dependent Claim
26 words
In the improved gas reaction of claim 1, utilizing as said catalyst system a complex reducing agent component wherein X is potassium and M is nickel.
Claim 4
Dependent Claim
30 words
In the improved gas reaction of claim 1, utilizing said complex reducing agent wherein M is Ni, R is tertiary amyl and the Group VI metal carbonyl is molybdenum hexacarbonyl.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |