US4215019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ruthenium-cobalt-gold catalyst for hydrogenation of unsaturated dinitriles
Assignee: Phillips Petroleum Co
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Filing: 1978-11-14
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Granted: 1980-07-29
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Expires: 1998-11-14
Abstract
Abstract Cobalt and gold in a ruthenium hydrogenation catalyst markedly increases the yield of product. A method for hydrogenating branched-chain olefinically unsaturated aliphatic dinitrile employing a ruthenium-cobalt-gold catalyst to produce saturated diamines is set forth.
Inventors
- 👤 Charles A. Drake
- 👤 Timothy P. Murtha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:33
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8913; C; C07; C07C; C07C209/00; C07C209/44; C07C209/48; C07C209/68; C07C209/70
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
A catalyst suited for hydrogenation of compounds essentially comprising ruthenium, cobalt and gold.
Claim 2
Dependent Claim
13 words
A catalyst suited for hydrogenation of compounds essentially comprising ruthenium, cobalt and gold.
Claim 3
Dependent Claim
18 words
A catalyst according to claim 1 wherein minor amounts of said elements are composited with a suitable support.
Claim 4
Dependent Claim
15 words
A catalyst according to claim 1 wherein the elements are composited with an alumina support.
Claim 5
Dependent Claim
11 words
A catalyst according to claim 3 wherein the support is gamma-alumina.
Claim 6
Dependent Claim
88 words
A catalyst according to claim 1 wherein a batch operation is effected and a support is employed, the elemental ruthenium content is in the range of from about 0.5 to about 50 weight percent, the cobalt is present in the approximate range of from about 10 to about 300 weight percent based on the weight of the ruthenium in the catalyst, and the gold is present in the approximate range of from about 5 to about 200 weight percent, also based on the ruthenium content of the catalyst.
Claim 7
Dependent Claim
88 words
A catalyst according to claim 1 wherein a continuous operation is effected and a support is employed, the elemental ruthenium content is in the range of from about 0.01 to about 10 weight percent, the cobalt is present in the approximate range of from about 10 to about 300 weight percent based on the weight of the ruthenium in the catalyst, and the gold is present in the approximate range of from about 5 to about 200 weight percent, also based on the ruthenium content of the catalyst.
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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |