Process and apparatus for preparation of phenols

Details Process and apparatus for preparation of phenols Process and apparatus for preparation of phenols

C - Chemistry, Metallurgy

07

C

260/615, 23/395.

C07C 37/60 (2006.01) B01J 4/00 (2006.01) C07C 37/08 (2006.01)

Patent

CA 1144180

ABSTRACT OF THE DISCLOSURE Disclosed is a process for the preparation of phenols which comprises reacting an .alpha.-hydroxyalkyl-substituted aromatic compound and/or an .alpha.,.beta.-unsatur- sted alkyl-substituted aromatic compound with hydrogen peroxide in the presence of an acid catalyst, in which hydrogen peroxide is diluted with a diluent, es- pecially acetone, so that the volume is at least 10 times the original volume, and the diluted hydrogen peroxide is supplied in a divided manner to at least two portions of a reaction vessel or the diluted hydrogen peroxide is scattered by sprinkling the same into the reaction vessel. According to a preferred em- bodiment, the diluted hydrogen peroxide is continuously supplied to the gas phase in the reaction vessel from a scattering device which is similar to but separate from a scattering device for supplying the starting aromatic compound, particularly, a product formed by oxidizing an isopropyl aromatic compound with molecular oxygen. According to this process, the efficiency of utilization of hydrogen peroxide is increased and a phenol of high quality can be obtained in a high yield with a high safety.

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