US4053524A
Expired / Lapsed
US
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Hydrogenation process and catalyst
Assignee: Phillips Petroleum Co
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Filing: 1975-08-28
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Granted: 1977-10-11
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Expires: 1995-08-28
Abstract
Abstract Aromatic compounds that are hydroxy-substituted on the aromatic nucleus can effectively be hydrogenated by contacting those compounds simultaneously with hydrogen and a catalyst comprising ruthenium supported by Cr 2 O 3 under alkaline conditions.
Inventors
- 👤 Paul R. Stapp
- 👤 Marvin M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:17
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
A process for the hydrogenation of phenol which comprises admixing said phenol and an aqueous alkaline solution diluent having an alkali concentration such that the mol ratio of alkaline agent to phenol is in the range of 0.001 to about 2 mols per mol of phenol and treating the resulting admixture with hydrogen at a temperature in the range of 75° to about 200° C. and a pressure of about 225 to about 5000 psig in the presence of from 1 to about 10 parts by weight per 100 parts by weight of said phenol of a catalyst consisting essentially of 0.1 to 1.0 weight percent ruthenium on Cr.sub. 2 O 3 whereby the hydrogenation is effected.
Claim 2
Dependent Claim
117 words
A process for the hydrogenation of phenol which comprises admixing said phenol and an aqueous alkaline solution diluent having an alkali concentration such that the mol ratio of alkaline agent to phenol is in the range of 0.001 to about 2 mols per mol of phenol and treating the resulting admixture with hydrogen at a temperature in the range of 75° to about 200° C. and a pressure of about 225 to about 5000 psig in the presence of from 1 to about 10 parts by weight per 100 parts by weight of said phenol of a catalyst consisting essentially of 0.1 to 1.0 weight percent ruthenium on Cr.sub. 2 O 3 whereby the hydrogenation is effected.
Claim 3
Dependent Claim
21 words
A process in accordance with claim 1 wherein said phenol is simultaneously contacted with said alkaline solution, said catalyst and hydrogen.
Claim 4
Dependent Claim
16 words
A process in accordance with claim 1 wherein said catalyst contains about 0.5 weight percent ruthenium.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |