US4199478A
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Method for preparing metal-carbonyl clusters immobilized in zeolite, as heterogeneous catalysts
Assignee: Anic SpA
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Filing: 1978-02-01
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Granted: 1980-04-22
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Expires: 1998-02-01
Abstract
Abstract Metal carbonyl clusters occluded in zeolites are prepared, to be used as catalyst in certain special reactions such as hydroformylation of diene hydrocarbons. Rhodium complexes are immobilized in certain zeolites and the catalyst thus obtained can be used as a heterogeneous catalyst.
Inventors
- 👤 Elvio Mantovani
- 👤 Nicola Palladino
- 👤 Antonio Zanobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:13
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; C01; C01G; C01G1/00; C01G1/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A method for preparing the preparation of metal carbonyl clusters which are trapped in the interior of the crystalline structure of zeolites comprising exchanging a zeolite with a metal in the form of a salt or an ion complex, subsequently reducing and carbonylating the metal itself and recovering a metal carbonyl cluster which is trapped in the interior of the crystalline structure of said zeolite.
Claim 2
Independent Claim
65 words
A method for preparing the preparation of metal carbonyl clusters which are trapped in the interior of the crystalline structure of zeolites comprising exchanging a zeolite with a metal in the form of a salt or an ion complex, subsequently reducing and carbonylating the metal itself and recovering a metal carbonyl cluster which is trapped in the interior of the crystalline structure of said zeolite.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein the metal belongs to the Eighth Group of the Periodic System.
Claim 4
Dependent Claim
54 words
A method according to claim 1, wherein zeolites of the X and Y type are exchanged with complexes of metals of the Eighth Group of the type [me(NH 3 )a] X b wherein X is a halogen, a varies from 4 to 6 and b is equal to the oxidation number of the metal.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |