US4222898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero-valent mixed metal catalysts and process of preparation
Assignee: Borg Warner Corp
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Filing: 1979-03-07
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Granted: 1980-09-16
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Expires: 1999-03-07
Abstract
Abstract A process for the preparation of novel zero-valent mixed catalysts. The catalysts are prepared by the reaction of an organic metal cluster compound wherein one of the metals is lithium with a complex of a rhodium halide and an olefinic hydrocarbon ligand. The catalyst may, if desired, be deposited on a support such as alumina or silica. It is effective to catalyze the hydrogenation of organic compounds such as benzene, styrene and the like.
Inventors
- 👤 Jan G. Noltes
- 👤 J. T. B. H. Jastrzebski
- 👤 Gerard VAN Koten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:25
CPC Classifications
B; B01; B01J; B01J37/00; B01J23/00; B01J23/38; B01J23/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A process for the preparation of a zero-valent mixed metal catalyst comprising reacting an organic metal cluster compound conforming to the formula R x+y M x Li y where R is alkyl of 1-12 carbon atoms, M is a Group IB metal, x and y are each 1-4, and x+y is 2-8, with a rhodium halide complex of the formula RhX a L b where X is chlorine or bromine, L is an olefinic hydrocarbon ligand, a is 1-3 and b is 1-4, in a hydrocarbon solvent.
Claim 2
Dependent Claim
87 words
A process for the preparation of a zero-valent mixed metal catalyst comprising reacting an organic metal cluster compound conforming to the formula R x+y M x Li y where R is alkyl of 1-12 carbon atoms, M is a Group IB metal, x and y are each 1-4, and x+y is 2-8, with a rhodium halide complex of the formula RhX a L b where X is chlorine or bromine, L is an olefinic hydrocarbon ligand, a is 1-3 and b is 1-4, in a hydrocarbon solvent.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein R is a butyl group.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the organic metal cluster compound is reacted with the rhodium halide complex at approximtely room temperature.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein the rhodium halide complex is a rhodium chloride.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the hydrocarbon solvent is benzene.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein the reaction mixture is substantially free of oxygen.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the reaction mixture is substantially free of moisture.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the zero-valent rhodium catalyst is deposited on a carrier.
Claim 10
Dependent Claim
13 words
The process of claim 8 wherein the carrier is silica, alumina or carbon.
Claim 11
Dependent Claim
19 words
The process of claim 1 wherein M in the structural formula of the organic metal cluster compound is gold.
Claim 12
Dependent Claim
8 words
The product of the process of claim 1.
Claim 13
Dependent Claim
8 words
The product of the process of claim 2.
Claim 14
Dependent Claim
8 words
The product of the process of claim 10.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |