Oxidative Dehydrogenation of Cumene over Polyarylenequinone Catalyst

Abstract

Oxidative dehydrogenationof cumeneover heat-stable polyarylenequinone catalyst prepared by the reaction of diazotized benzidine with ben.zoquinone has been studied in gas phase using a xed bed reactor The experime:nts covered the ra:nges of temperature from 200 to350 C, and of contact time(VV/F)from 6 to229-cat hr/mo1 at atmospheric pressure. The reaction proceeded catalytically in air, main product from being ev-methylstyrene. Small amounts of-acetophenone and carbon dioxide were also formed. It is suggested from the reactionof isopropyI alcohol that the active site cf poIyaryIenequinone catalyst forox dative dehydrogenat 0 reaChOn IS qU none StrUcture,