Patent US4289709A successfully refreshed from Google Patents.
US4289709A
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Preparation of methanol from synthesis gas with promoted palladium catalysts
Assignee: Union Carbide Corp
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Filing: 1979-12-19
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Granted: 1981-09-15
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Expires: 1999-12-19
Abstract
Abstract An improved catalytic process for the production of methanol from hydrogen and carbon monoxide at a temperature of from about 200° C. to about 400° C. and a pressure of from about 150 to about 20,000 psia which comprises effecting the reaction in the presence of a heterogeneous solid catalyst comprising palladium in combination with a metal additive selected from the group consisting of lithium, magnesium, strontium, barium, molybdenum and mixtures thereof.
Inventors
- 👤 Steven W. Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:20
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; B01J23/64; B01J23/652; B01J23/6525; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
In a heterogeneous catalytic process for the production of methanol by the reaction of hydrogen and carbon monoxide in the presence of a palladium-containing catalyst at a temperature of from about 200° C. to about 400° C. and a pressure of from about 150 to about 20,000 psia, the improvement for enhancing the production of methanol which comprises effecting said reaction in the presence of a heterogeneous solid catalyst containing palladium in combination with a metal additive selected from the group consisting of lithium, magnesium, strontium, barium, molybdenum and mixtures thereof.
Claim 2
Dependent Claim
91 words
In a heterogeneous catalytic process for the production of methanol by the reaction of hydrogen and carbon monoxide in the presence of a palladium-containing catalyst at a temperature of from about 200° C. to about 400° C. and a pressure of from about 150 to about 20,000 psia, the improvement for enhancing the production of methanol which comprises effecting said reaction in the presence of a heterogeneous solid catalyst containing palladium in combination with a metal additive selected from the group consisting of lithium, magnesium, strontium, barium, molybdenum and mixtures thereof.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said catalyst is supported on silica gel.
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein the palladium concentration on the catalyst support is from about 2-5% by weight, of the catalyst support.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein said metal additive comprises molybdenum.
Claim 6
Dependent Claim
26 words
The process of claim 4 wherein the molybdenum concentration on the catalyst support is from about 0.2% to about 3.0% by weight of the catalyst support.
Claim 7
Dependent Claim
31 words
The process of claim 1 wherein the reaction temperature is from about 250° C. to about 350° C. and the reaction pressure is from about 150 psia to about 3000 psia.
Claim 8
Dependent Claim
25 words
The process of claim 1 wherein said gaseous mixture contains hydrogen and carbon monoxide in a volume ratio of from about 1:5 to about 5:1.
References Cited (Backward Citations)
US1681753A
Cited
US4119656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |