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Zero-valent rhodium catalyst hydrogenation
Assignee: Borg Warner Corp
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Filing: 1979-10-25
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Granted: 1981-01-06
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Expires: 1999-10-25
Abstract
Abstract A process for the preparation of novel zero-valent rhodium catalysts. The catalysts are prepared by the reaction of a hydrocarbyl-lithium compound with a hydrocarbon-soluble complex of a rhodium 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
- 👤 Jan G. Noltes
- 👤 Gerard VAN Koten
- 👤 Murray S. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:24
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2282; B01J31/2291; B01J31/2295; C07C5/03; C07C5/08; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2231/646; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
71 words
A process for the hydrogenation of aromatic, olefinic and acetylenic compounds comprising treating such compounds with hydrogen in the presence of a zero-valent rhodium catalyst prepared by a process comprising reacting a hydrocarbyllithium compound with a rhodium halide complex of the formula Rh X a L b where X is a chlorine or bromine, L is an olefinic hydrocarbon ligand, a is 1-3 and b is 1-4 in a hydrobcarbon solvent.
Claim 2
Dependent Claim
71 words
A process for the hydrogenation of aromatic, olefinic and acetylenic compounds comprising treating such compounds with hydrogen in the presence of a zero-valent rhodium catalyst prepared by a process comprising reacting a hydrocarbyllithium compound with a rhodium halide complex of the formula Rh X a L b where X is a chlorine or bromine, L is an olefinic hydrocarbon ligand, a is 1-3 and b is 1-4 in a hydrobcarbon solvent.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein the hydrogenation is carried out at about room temperature.
References Cited (Backward Citations)
US3759838A
Cited
DE2117439C3
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US3697449A
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US3954601A
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US4053515A
Cited
US4021374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |