온화한 산화제로서 CO2를 이용한 알킬고리화의 탈수소화에 대한 견고한 촉매

초록

Production of Alenylaromatics such as styrene is very energy-consumable process[1]. it is commercially operated with a large excess of superheated steam as a diluent using potassium-promoted iron oxide catalysis. Therefore lots of efforts have been for reduce it and replace with CO2. [2-6] We have also studied that corbon dioxide can play a role a s the soft oxidant in the oxidative conversions of several hydrocarbons. Moreover, it was found that CO2 can suppress the total oxidation in the oxidative coupling of methane and alkylaromatics together with the increse of selecivity and the low rate of coke formation[3-6]. In this work, oxidative dehydrogenation of alkylaromatics such a s ethylbenzens(EB) with carbon dioxide has been carried out over supported iron oxide and vanadium oxide catalysis. It was found that carbon dioxide plays a key role as soft oxidant for promotigng the catalytic activity as well as selectivity to alkenylaromatics such as styrene.