DEHYDROGENATION CATALYST FOR ALKYL AROMATIC COMPOUNDS EXHIBITING HIGH PERFORMANCE IN THE PRESENCE OF HIGH-CONCENTRATION CO2, METHOD FOR PRODUCING THE SAME, AND DEHYDROGENATION PROCESS USING THE SAME

摘要

The object of the present invention is to provide a catalyst for preparationofan alkenyl aromatic compound by dehydrogenating an alkyl aromatic compound, aprocess for preparation thereof, and a method for using it. Under the muchcarbondioxide-containing dehydrogenation reaction condition in which CO2 is presentin amolar ratio of 0.015 to 0.20 based on an aromatic compound in a material gas,as thecatalyst being capable of producing the alkenyl aromatic compound in the highyield,the catalyst which comprises an iron and an alkali metal, and comprises about13 toabout 60 % by weight of a rare earth element calculated as an oxide iscontacted with areaction gas.