THE OXIDE COMPOSITE CATALYST FOR DEHYDROGENATION OF ETHYLBENZENE WITH CARBON DIOXIDE AS OXIDANT AND THE FABRICATION METHOD THEREOF

摘要

is an object of the present invention is a composite oxide for dehydrogenation of ethylbenzene using carbon dioxide as an oxidizing agent and catalyst to provide a preparation method thereof. To this end, the present invention is an alkali metal or alkaline earth metal in the compound oxide catalyst doped zirconium oxide and the metal oxide, and provides a mixed oxide catalyst for the dehydrogenation of ethylbenzene using carbon dioxide as an oxidant. In addition, the present invention includes the steps of introducing an alkali metal salt or alkaline earth metal salt solution and then mixing the zirconium solution and the metal oxide solution (step 1); Forming a composite metal precipitate in solution was added to the base solution of step 1 (step 2); Provides a process for the preparation of ethyl benzene in the mixed oxide catalyst for the dehydrogenation reaction using carbon dioxide as an oxidizing agent, characterized in that it comprises a; and after filtration and drying and firing it to step (step 3) eluting the composite metal precipitate The. Furthermore, the present invention provides a method of producing styrene monomer comprising the carbon dioxide (CO ₂ ) dehydrogenate ethylbenzene in the presence of a catalyst by using the reacting step. The carbon dioxide is a complex oxide catalyst used in the oxidative dehydrogenation of the oxidizing agent is effective in increasing the conversion and selectivity of the desired product of the reaction materials can dramatically increase the productivity of the present invention