Patent US4151208A successfully refreshed from Google Patents.
US4151208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the selective preparation of acetaldehyde from methanol and synthesis gas
Assignee: Gulf Research and Development Co
•
Filing: 1977-12-23
•
Granted: 1979-04-24
•
Expires: 1997-12-23
Abstract
Abstract A process for selectively producing acetaldehyde which comprises contacting methanol, hydrogen and carbon monoxide with cobalt (II) meso-tetraaromaticporphine and an iodine promoter.
Inventors
- 👤 Wayne R. Pretzer
- 👤 Thaddeus P. Kobylinski
- 👤 John E. Bozik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:02
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; B01J31/26; C; C07; C07C; C07C45/00; C07C45/49; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/80; B01J2531/84; B01J2531/845
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
129 words
In a process for the production of acetaldehyde from methanol wherein methanol is reacted with hydrogen and carbon monoxide in the presence of a catalyst, the improvement which comprises contacting methanol, hydrogen and carbon monoxide with cobalt (II) meso-tetraaromaticporphine and an iodine promoter, at a hydrogen and carbon monoxide molar ratio of from about 10:1 to about 1:10, a methanol and cobalt (II) meso-tetraaromaticporphine molar ratio of from about 1:1 to about 100,000:1, a cobalt (II) meso-tetraaromaticporphine and iodine promoter molar ratio of from about 100:1 to about 1:100, a reaction temperature of from about 150° C. to about 250° C., and a reaction pressure of from about 1000 psig. (6.83 MPa) to about 6000 psig. (40.98 MPa), for a reaction time period sufficient to convert methanol to acetaldehyde.
Claim 2
Dependent Claim
129 words
In a process for the production of acetaldehyde from methanol wherein methanol is reacted with hydrogen and carbon monoxide in the presence of a catalyst, the improvement which comprises contacting methanol, hydrogen and carbon monoxide with cobalt (II) meso-tetraaromaticporphine and an iodine promoter, at a hydrogen and carbon monoxide molar ratio of from about 10:1 to about 1:10, a methanol and cobalt (II) meso-tetraaromaticporphine molar ratio of from about 1:1 to about 100,000:1, a cobalt (II) meso-tetraaromaticporphine and iodine promoter molar ratio of from about 100:1 to about 1:100, a reaction temperature of from about 150° C. to about 250° C., and a reaction pressure of from about 1000 psig. (6.83 MPa) to about 6000 psig. (40.98 MPa), for a reaction time period sufficient to convert methanol to acetaldehyde.
Claim 3
Dependent Claim
37 words
The process of claim 1 wherein said cobalt (II) meso-tetraaromaticporphine is a member selected from the group consisting of cobalt (II) meso-tetraphenylporphine, cobalt (II) meso-tetra(4 pyridyl)porphine, cobalt (II) meso-tetra(4-carboxyphenyl)porphine, cobalt (II) meso-tetra(4-N-pyridylphenyl)porphine, and sodium cobalt (II) meso-tetra(4-sulfonatophenyl)porphine.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said cobalt (II) meso-tetraaromaticporphine is cobalt (II) meso-tetraphenylporphine.
Claim 5
Dependent Claim
24 words
The process according to claim 1 wherein the hydrogen and carbon monoxide are in a molar ratio of from about 3:1 to about 1:3.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein the methanol and cobalt (II) meso-tetraaromaticporphine are in a molar ratio of from about 1:1 to about 2,000:1.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein the cobalt (II) meso-tetraaromaticporphine and iodine promoter are in a molar ratio of from about 10:1 to about 1:10.
Claim 8
Dependent Claim
34 words
The process of claim 1 wherein the iodine promoter is a member selected from the group consisting of iodine, potassium iodide, calcium iodide, sodium iodide, lithium iodide, hydrogen iodide, methyl iodide and ethyl iodide.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein the iodine promoter is iodine.
Claim 10
Dependent Claim
18 words
The process according to claim 1 having a reaction temperature from about 175° C. to about 225° C.
Claim 11
Dependent Claim
21 words
The process of claim 1 having a reaction pressure from about 2000 psig (13.66 MPA) to about 5000 psig (34.15 MPA).
Claim 12
Dependent Claim
18 words
The process of claim 1 having a reaction time period from about 0.5 hour to about 10 hours.
Claim 13
Dependent Claim
18 words
The process of claim 1 having a reaction time period from about 1 hour to about 5 hours.
References Cited (Backward Citations)
US3356734A
Cited
US3996288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |