Catalytic conversion of phenol to cyclohexanol and/or cyclohexanone
Patent 3998884 Issued on December 21, 1976. Estimated Expiration Date: 
December 21, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 21, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2087691 2328719 2574078 2829166 2857432 2873296 3076810 3305586 InventorAssigneeApplicationNo. 565086 filed on 04/04/1975US Classes:568/362, Phenol containing reactant568/835Cyclohexanol per seExaminersPrimary: Morgenstern, NormanAttorney, Agent or FirmInternational ClassC07C 45/00 (20060101)AbstractPhenol is reacted with hydrogen in contact with a nickel catalyst, wherein the concentration of hydrogen is controlled, and/or wherein controlled amounts of water are included in the reaction mixture, to produce cyclohexanol, or preferably cyclohexanol plus cyclohexanone. Optionally, the product stream from this reaction is used as the feed stream for a dehydrogenation reaction to produce cyclohexanone.Other References
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