METHOD FOR PREPARING STYRENE THROUGH DEHYDROGENATION PROCESS OF ETHYLBENZENE USING OXYGEN, CARBON DIOXIDE AND WATER

摘要

The present invention relates to a method for preparing styrene through a dehydrogenation process of ethylbenzene using oxygen, carbon dioxide and water. More particularly, the method according to the present invention comprises the steps of: (1) passing ethylbenzene, to an amphoteric catalyst, in combination with at least one selected from the group consisting of carbon dioxide and water; and (2) introducing oxygen to the amphoteric catalyst of step (1) to form a styrene monomer according to the conversion of ethylbenzene through dehydrogenation. According to the present invention, the reaction is carried out by the addition of oxygen and water to inhibit and remove formation of cokes on the surface of the surface, thereby inhibiting cracking of ethylbenzene. In addition, it is possible to improve the surface adsorption ability of carbon dioxide to the catalyst surface through the interaction between carbon dioxide and water, thereby improving the catalytic activity.;COPYRIGHT KIPO 2017