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US4152303A
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Zero-valent metal catalysts and a process for preparing them
Assignee: Borg Warner Corp
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Filing: 1977-08-24
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Granted: 1979-05-01
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Expires: 1997-08-24
Abstract
Abstract A process for the preparation of novel zero-valent metal 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 metal halide and a 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
- 👤 Murray S. Cohen
- 👤 Jan G. Noltes
- 👤 Gerard VAN Koten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:04
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/70; B01J23/72; B01J31/00; B01J31/16; B01J31/22; B01J31/2282; B01J31/2295; B01J37/00; B01J37/02; B01J37/0215; B01J37/03; B01J37/031; B01J37/08; B01J37/082; B01J37/086; C07C5/03; C07C5/08; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2231/646; B01J2531/00; B01J2531/10; B01J2531/11; B01J2531/16; B01J2531/18; B01J2531/80; B01J2531/82; B01J2531/822; B01J31/1616; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/48; C07C2523/52; C07C2523/70; C07C2523/72; C07C2523/89; C07C2601/00; C07C2601/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A process for the preparation of a zero-valent metal catalyst comprising reacting an organic metal cluster compound of the formula Ar x+y M x Li y where Ar is aromatic hydrocarbyl, M is a group 1B metal, and x and y are 1-4, with a metal halide complex of the formula TX a L b where T is a transition metal, X is halogen, L is an organic ligand, b is 1-4, and a is 1-3, in a hydrocarbon solvent.
Claim 2
Dependent Claim
80 words
A process for the preparation of a zero-valent metal catalyst comprising reacting an organic metal cluster compound of the formula Ar x+y M x Li y where Ar is aromatic hydrocarbyl, M is a group 1B metal, and x and y are 1-4, with a metal halide complex of the formula TX a L b where T is a transition metal, X is halogen, L is an organic ligand, b is 1-4, and a is 1-3, in a hydrocarbon solvent.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the organic metal cluster compund is reacted with the metal halide complex at approximately room temperature.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein T in the metal halide complex is a group VIII metal.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein T in the metal halide complex is rhodium and X is C1.
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
16 words
The process of claim 1 wherein the zero valent metal catalyst is deposited on a carrier.
Claim 10
Dependent Claim
12 words
The process of claim 8 wherein the carrier is alumina or silica.
Claim 11
Dependent Claim
8 words
The product of the process of claim 1.
Claim 12
Dependent Claim
8 words
The product of the process of claim 3.
Claim 13
Dependent Claim
11 words
A mixed gold-rhodium catalyst prepared by the process of claim 1.
Claim 14
Dependent Claim
11 words
A mixed copper-rhodium catalyst prepared by the process of claim 1.
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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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |