PRODUCTION OF STYRENE

摘要

PROBLEM TO BE SOLVED: To provide a method suppressing the selectivity decrease of hydrogen oxidation of an oxidation catalyst in the production of styrene by oxidative dehydrogenation of ethylbenzene. SOLUTION: Alkaline substance is preliminarily removed from a reaction mixture supplied to a process (2) in the production of styrene by dehydrogenating ethylbenzene at least containing the following (1) to (3) processes. Process (1): the process obtaining the reaction mixture containing styrene and hydrogen by dehydrogenating ethylbenzene in the presence of a dehydrogenation catalyst. Process (2): the process contacting the reaction mixture with the oxidizing catalyst to selectively oxidize hydrogen contained in the mixture to afford water. Process (3): the process contacting the oxidation processed mixture with the dehydrogenation catalyst to dehydrogenate the unreacted ethylbenzene contained in the mixture to obtain styrene.