Process and apparatus for preparation of phenols

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

1980-06-30

1982-06-08

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568741, 568771, C07C 3760

Patent

active

043341080

ABSTRACT:
Disclosed is a process for the preparation of phenols which comprises reacting an .alpha.-hydroxyalkyl-substituted aromatic compound and/or an .alpha.,.beta.-unsaturated alkyl-substituted aromatic compound with hydrogen peroxide in the presence of an acid catalyst, in which hydrogen peroxide is diluted with a diluent, especially 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 into the reaction vessel. According to a preferred embodiment, 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.

REFERENCES:
patent: 3600447 (1971-09-01), Vesely et al.
patent: 4072722 (1978-02-01), Umemura et al.
patent: 4078006 (1978-03-01), Umemura et al.

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