US3897471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing methanol
Assignee: GEA Group AG
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Filing: 1972-10-13
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Granted: 1975-07-29
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Expires: 1992-10-13
Abstract
Abstract In the production of methanol by contacting a synthesis gas containing oxides of carbon and hydrogen with a catalyst at elevated temperature and pressure, the improvment which comprises employing a catalyst comprising copper and vanadium and one or both of zinc and manganese at a temperature of about 200*-300*C, and a pressure of about 20-100 kilograms per square centimeter above atmospheric pressure.
Inventors
- 👤 Rolf Herbert
- 👤 Helmut Liebgott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:35
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C29/1516; C07C29/1518; C07C29/153; C07C29/154
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
IN THE PRODUCTION OF METHANOL BY CONTACTING A SYNTHESIS GAS CONTAINING OXIDES OF CARBON AND HYDROGEN WITH A CATALYST AT ELEVATED TEMPERATURE AND PRESSURE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A CATALYST CONSISTING ESSENTIALLY OF COPPER AND VANADIUM AND ONE OR BOTH OF ZINC AND MANGANESE AT A TEMPERATURE OF BOUT 200*-300*C. AD A PRESSURE OF ABOUT 20-100 KILOGRAMS PER SQUARE CENTIMETER ABOVE ATMOSPHERIC PRESSURE, THE CATALYST ON AN ATOMIC PERCENTAGE BASED ON PURE METALS CONTAINING ABOUT 40-60% OF COPPER, ABOUT 10-20% OF VANADIUM, AND ABOUT 20-50% OF ONE OR BOTH OF ZINC AND MANGANESE, SID CATALYST HAVING BEEN PREPARED BY PERCIPITATION OF SALTS OF THE METALS FROM A SOLUTION THEREOF FOLLOWED BY CALCINATION.
Claim 2
Dependent Claim
113 words
IN THE PRODUCTION OF METHANOL BY CONTACTING A SYNTHESIS GAS CONTAINING OXIDES OF CARBON AND HYDROGEN WITH A CATALYST AT ELEVATED TEMPERATURE AND PRESSURE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING A CATALYST CONSISTING ESSENTIALLY OF COPPER AND VANADIUM AND ONE OR BOTH OF ZINC AND MANGANESE AT A TEMPERATURE OF BOUT 200*-300*C. AD A PRESSURE OF ABOUT 20-100 KILOGRAMS PER SQUARE CENTIMETER ABOVE ATMOSPHERIC PRESSURE, THE CATALYST ON AN ATOMIC PERCENTAGE BASED ON PURE METALS CONTAINING ABOUT 40-60% OF COPPER, ABOUT 10-20% OF VANADIUM, AND ABOUT 20-50% OF ONE OR BOTH OF ZINC AND MANGANESE, SID CATALYST HAVING BEEN PREPARED BY PERCIPITATION OF SALTS OF THE METALS FROM A SOLUTION THEREOF FOLLOWED BY CALCINATION.
Claim 3
Dependent Claim
19 words
Process according to claim 1 wherein the molar proportions of carbon monoxide, carbon dioxide and hydrogen are such that
Claim 4
Dependent Claim
50 words
Process according to claim 1 wherein the catalyst is present in a tube through which the synthesis gas is passed at a linear velocity of at least 2 meters per second computed on the basis of the tube being empty and the gases being at 760 mm Hg and 0*C.
Claim 5
Dependent Claim
29 words
Process according to claim 1 wherein the synthesis gas is at a temperature of about 220*-260*C. and a pressure of about 40-60 kilograms per square centimeter above atmospheric pressure.
Claim 6
Dependent Claim
27 words
Process according to claim 4 wherein on an atomic percentage based on pure metals the catalyst contains 60% of copper, 10% of vanadium and 30% of zinc.
Claim 7
Dependent Claim
27 words
Process according to claim 4 wherein on an atomic percentage based on pure metals the catalyst contains 50% of copper, 20% of vanadium and 30% of manganese.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |