B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
260/583, 252/91
B01J 23/44 (2006.01) B01J 23/58 (2006.01) B01J 35/10 (2006.01) C07C 45/00 (2006.01)
Patent
CA 1109855
ABSTRACT OF THE DISCLOSURE A method for promoting the selective hydrogenation of phenol to cyclohexanone in the presence of an improved palladium-on-carbon catalyst which comprises effecting the hydrogenation reaction in the presence of an in situ promoter preferably from the group consisting of sodium hydroxide, sodium carbonate, and sodium phenate. The characteristic properties of the palladium-on-carbon catalyst used in this process are significantly different from commercially available catalyst, and the present invention involves apparent interaction of the in situ promoter with the present unique catalyst. Respecting safety of operation, it is important that the present process and catalyst permit hydrogenation of phenol in the liquid phase utilizing at least 2, preferably 3 to 8, reactors in series with each reactor maintained at or below the atmospheric boiling point of the reaction mixture in the reactor. -1-
286935
Fisher William B.
Peppen Jan F. Van
Allied Corporation
Gowling Lafleur Henderson Llp
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