Catalytic oxidative dehydrogenation of ketones with improved supported gold catalyst
Abstract
Abstract An improvement is provided in a process in which ketones and mixtures of ketones and alcohols having at lest one pair of hydrogen atoms on the alpha and beta carbon atoms are oxidatively dehydrogenated to the corresponding ethylenically unsaturated ketone by contacting the ketone and molecular oxygen-containing gas with a catalyst containing a metal of Group IB (Cu, Ag, Au) in the vapor phase (400*-750*C.). The catalyst can be a Group IB metal or oxysalt and can be on a support. Gold and supported gold catalysts are particularly preferred. The improvement is in obtaining high selectivity by the use of a supported gold catalyst (1-50 percent gold) in which the support is a clear, transparent, single crystal alpha-alumina having at least 50 percent and preferably 75 percent of its surface area covered with gold.
Inventors
- 👤 Robert W Etherington Jr
- 👤 Koei-Liang Liauw
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |