US4421862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CO Hydrogenation and alcohol homologation by means of soluble group VIII homogeneous catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1981-03-11
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Granted: 1983-12-20
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Expires: 2001-03-11
Abstract
Abstract Hydrogen and carbon monoxide are converted into methanol by means of the catalytic action of soluble ruthenium-carbonyl containing complexes at a temperature of from about 250°-300° C., pressures of from about 54 to 200 MPa and CO/H 2 ratio of from 3:1 to 1:10. The soluble ruthenium-carbonyl containing complex is prepared in situ in the reaction medium from sources of ruthenium capable of forming Ru-CO containing complexes.
Inventors
- 👤 John S. Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:52
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A process for the homogeneous catalytic synthesis of methanol and methyl formate from CO and hydrogen consisting essentially of contacting CO and H 2 with a catalytic system comprising essentially of a soluble ruthenium carbonyl containing complex plus a phosphine in a solvent selected from the group consisting of saturated and aromatic hydrocarbons, ethers, carboxylic acids, alkanols, ketones, esters and lactones at a temperature of from about 250° to 300° C., a pressure of from about 54 to 200 MPa and a CO to H 2 ratio of from 3:1 to 1:10.
Claim 2
Dependent Claim
92 words
A process for the homogeneous catalytic synthesis of methanol and methyl formate from CO and hydrogen consisting essentially of contacting CO and H 2 with a catalytic system comprising essentially of a soluble ruthenium carbonyl containing complex plus a phosphine in a solvent selected from the group consisting of saturated and aromatic hydrocarbons, ethers, carboxylic acids, alkanols, ketones, esters and lactones at a temperature of from about 250° to 300° C., a pressure of from about 54 to 200 MPa and a CO to H 2 ratio of from 3:1 to 1:10.
Claim 3
Dependent Claim
96 words
A process for the homogeneous catalytic synthesis of methanol and methyl formate from CO and H 2 consisting essentially of contacting CO and H 2 with a catalytic system consisting essentially of Ru(acetylacetonate) 3 , Ru 3 CO 12 and Ru(CO) 5 plus a phosphine in a solvent selected from the group consisting of saturated and aromatic hydrocarbons, ethers, carboxylic acids, alkanols, ketones, esters and lactones at temperatures of from about 250° to 300° C., a pressure of from about 54 to 200 MPa and a CO to H 2 ratio of from 3:1 to 1:10.
Claim 4
Dependent Claim
96 words
A process for the homogeneous catalytic synthesis of methanol and methyl formate from CO and H 2 consisting essentially of contacting CO and H 2 with a catalytic system consisting essentially of Ru(acetylacetonate) 3 , Ru 3 CO 12 and Ru(CO) 5 plus a phosphine in a solvent selected from the group consisting of saturated and aromatic hydrocarbons, ethers, carboxylic acids, alkanols, ketones, esters and lactones at temperatures of from about 250° to 300° C., a pressure of from about 54 to 200 MPa and a CO to H 2 ratio of from 3:1 to 1:10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |