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Patent US4436833A successfully refreshed from Google Patents.
US4436833A
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US
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Preparation of methanol synthesis catalyst comprising zinc, copper and aluminum
Assignee: BASF SE
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Filing: 1983-03-25
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Granted: 1984-03-13
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Expires: 2003-03-25
Abstract
Abstract A process for the preparation of methanol by reacting a gaseous mixture of carbon monoxide, carbon dioxide and hydrogen at an elevated temperature and under superatmospheric pressure over a catalyst which contains zinc, copper and aluminum, the catalyst being prepared from a co-crystalline material of the formula Cu 2 .2 Zn 2 .8 (OH) 6 (CO 3 ) 2 , containing aluminum hydroxide as a structual promoter, by calcination and reduction at from 160° to 350° C. The novel catalyst has the advantage of giving a substantially increased space-time yield and having a longer life.
Inventors
- 👤 Franz J. Broecker
- 👤 Karl-Heinz Gruendler
- 👤 Laszlo Marosi
- 👤 Matthias Schwarzmann
- 👤 Bruno Triebskorn
- 👤 Guenter Zirker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:49
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/20; B01J23/00; B01J23/70; B01J23/76; B01J23/80; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/154; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A process for the preparation of a catalyst, for methanol synthesis, from a mixed crystalline material of the formula Cu.sub.2.2 Zn.sub.2.8 (OH).sub.6 (CO.sub.3).sub.2 which contains aluminum hydroxide as a structural promoter, wherein the improvement comprises co-precipitating copper, zinc and aluminum nitrates or acetates with sodium bicarbonate.
Claim 2
Dependent Claim
46 words
A process for the preparation of a catalyst, for methanol synthesis, from a mixed crystalline material of the formula Cu.sub.2.2 Zn.sub.2.8 (OH).sub.6 (CO.sub.3).sub.2 which contains aluminum hydroxide as a structural promoter, wherein the improvement comprises co-precipitating copper, zinc and aluminum nitrates or acetates with sodium bicarbonate.
Claim 3
Dependent Claim
13 words
The process of claim 1, wherein the zinc, copper and aluminum are nitrates.
Claim 4
Dependent Claim
10 words
The process of claim 1, wherein said catalyst is comminuted.
Claim 5
Dependent Claim
10 words
The process of claim 2 wherein said catalyst is comminuted.
Claim 6
Dependent Claim
44 words
The process of claim 1, wherein said mixed crystalline material of the formula Cu.sub.2.2 Zn.sub.2.8 (OH).sub.6 (CO.sub.3).sub.2 has an X-ray diffraction diagram characterized by at least the following d values of the diffraction lines: 6.75; 3.70; 3.21; 2.90; 2.75; 2.64; 2.15; 1.94; and 1.61.
Claim 7
Dependent Claim
13 words
The process of claim 5, wherein the zinc, copper and aluminum are nitrates.
Claim 8
Dependent Claim
10 words
The process of claim 5, wherein said catalyst is comminuted.
Claim 9
Dependent Claim
10 words
The process of claim 6, wherein said catalyst is comminuted.
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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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |