Method to purify alpha-methyl styrene prior to catalytic hydroge

Details Method to purify alpha-methyl styrene prior to catalytic hydroge Method to purify alpha-methyl styrene prior to catalytic hydroge

1982-06-04

1983-10-18

Lone, Werren B.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

568749, C07C 700

Patent

active

044107552

ABSTRACT:
Alpha-methyl styrene, obtained as a byproduct in the manufacture of phenol is hydrogenated to cumene using hydrogen and standard hydrogenation catalysts which are selective for the ethylenic side chain. Prior to hydrogenation the alpha-methyl styrene is treated to effect removal of hydroxy acetone present. By reducing or eliminating hydroxy acetone, poisoning of the catalyst is prevented. Hydroxy acetone is removed from the alpha-methyl styrene by catalytic pretreatment.

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patent: 3646235 (1972-02-01), Little et al.
patent: 3692845 (1972-09-01), Cheema et al.
patent: 4334107 (1982-06-01), Peppen

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