US4292196A
Expired / Lapsed
US
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Catalyst recovery
Assignee: Honeywell UOP LLC
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Filing: 1979-12-10
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Granted: 1981-09-29
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Expires: 1999-12-10
Abstract
Abstract Catalysts which comprise metal carbonyls or organometallic complexes in which the metal portion of the complex is selected from a Group VIII metal are useful in hydroformylation reactions. The catalysts which are homogeneous in nature may be recovered from the hydroformylation products by treating the catalyst complex with a nitrogen-containing compound in an aqueous phase whereby said catalyst may be easily separated from the hydroformylation products and recovered.
Inventors
- 👤 Edwin H. Homeier
- 👤 Alan R. Dodds
- 👤 Tamotsu Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:34
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/40; B01J31/4015; B01J31/4023; B01J31/4038; B01J31/4046; C; C01; C01G; C01G55/00; C01G55/001; C07; C07C; C07C29/00; C07C29/16; C07C45/00; C07C45/49; C07C45/50; C22; C22B; C22B3/00; C22B3/04; C22B3/12; C22B3/14; C22B3/20; C22B3/26; C22B3/28; C22B3/282; C22B3/286; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; B01J31/02; B01J31/0234; B01J31/0235; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A process for the extraction of a Group VIII metal catalyst contained in the products of a hydroformylation reaction of an olefin, carbon monoxide and hydrogen in the presence of said catalyst, the catalyst being in the form of a metal carbonyl or organometallic complex in homogeneous admixture with said reaction products, which process comprises treating the catalyst-containing reaction products, at a temperature of from about ambient to about 100° C. and a pressure of from about 0 to about 1000 psig., with the addition of an aqueous solution of a water-soluble nitrogen-containing compound selected from the group consisting essentially of ammonia, ammonium hydroxide and amines capable of acting as a complexing agent at said temperature and pressure, wherein said added nitrogen-containing compound complexes with said catalyst and recovering a separated aqueous phase containing the extracted resultant metal-containing complex.
Claim 2
Dependent Claim
139 words
A process for the extraction of a Group VIII metal catalyst contained in the products of a hydroformylation reaction of an olefin, carbon monoxide and hydrogen in the presence of said catalyst, the catalyst being in the form of a metal carbonyl or organometallic complex in homogeneous admixture with said reaction products, which process comprises treating the catalyst-containing reaction products, at a temperature of from about ambient to about 100° C. and a pressure of from about 0 to about 1000 psig., with the addition of an aqueous solution of a water-soluble nitrogen-containing compound selected from the group consisting essentially of ammonia, ammonium hydroxide and amines capable of acting as a complexing agent at said temperature and pressure, wherein said added nitrogen-containing compound complexes with said catalyst and recovering a separated aqueous phase containing the extracted resultant metal-containing complex.
Claim 3
Dependent Claim
19 words
The process as set forth in claim 1 in which said water soluble nitrogen-containing compound comprises tertiary amine compound.
Claim 4
Dependent Claim
17 words
The precess as set forth in claim 2 in which said tertiary amine is an alcohol amine.
Claim 5
Dependent Claim
15 words
The process as set forth in claim 3 in which said alcohol amine is N,N-dimethylethanolamine.
Claim 6
Dependent Claim
15 words
The process as set forth in claim 1 in which said amine compound is N,N-dimethylamine.
Claim 7
Dependent Claim
36 words
The process as set forth in claim 1 in which said metal carbonyl or organometallic complex is synthesized under hydroformylation conditions from catalyst precursors comprising a Group VIII metal, metal salt, metal hydroxide, or metal oxide.
Claim 8
Dependent Claim
22 words
The process as set forth in claim 1 in which the metal portion of said metal carbonyl or organometallic complex is rhodium.
Claim 9
Dependent Claim
24 words
The process as set forth in claim 1 in which said metal carbonyl or organometallic complex is modified by the presence of an amine.
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |