METHOD FOR PREPARING ALPHA METHYL STYRENE

摘要

PURPOSE: A manufacturing method of alpha-methylstyrene is provided to increase productivity of alpha-methylstyrene in phenol plant by converting concentrated cumene hydroperoxide to cumyl alcohol through hydrogenation process. CONSTITUTION: A manufacturing method of alpha-methylstyrene comprises the following steps: a step of manufacturing cumene hydroperoxide stream by oxidizing cumene; a step of manufacturing cumyl alcohol by separating part of the cumene hydroperoxide stream; a step of concentrating the cumene hydroperoxide stream; a step of selectively hydrogenizing under jewelry catalyst; and a step of manufacturing product including alpha-methylstyrene by dehydrating the reactant including cumyl alcohol under acid catalyst.