NATURAL ZEOLITE-SUPPORTED CATALYST HAVING GOOD NITROGEN OXIDE REMOVING EFFICIENCY, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR REMOVING N2O USING THE SAME

摘要

PURPOSE: To provide a natural zeolite-supported catalyst, which is good at price-competitiveness and has good removing efficiency of nitrogen oxide such as nitrous oxide, a method for manufacturing the same, and a method for removing N2O using the same. CONSTITUTION: The natural zeolite-supported catalyst comprises a natural zeolite and at least one active material selected from the group consisting of Fe, Co and Cu. The method for manufacturing the natural zeolite-supported catalyst comprises the steps of (a) heating a first mixture comprising a natural zeolite and an acidic solution to acid-treat the natural zeolite; (b) heating a second mixture comprising the acid-treated natural zeolite and an aqueous solution of an ammonium compound to firstly ion-exchange the natural zeolite; and (c) heating a third mixture comprising a metal ion selected from the group consisting of the firstly ion-exchanged natural zeolite, Fe ion, Co ion and Cu ion and an aqueous solution of an active material precursor that is a negative ion compound selected from the group consisting of NO3¬-, CO3¬-, Cl¬- and SO4¬2- to secondly ion-exchange.