▎ 摘　　要

NOVELTY - Selective reduction catalyst comprises a carrier including nitrogen-doped graphene oxide or nitrogen-doped reduced graphene oxide and active material supported on the carrier including manganese oxide, vanadium oxide and cerium oxide. USE - The selective reduction catalyst is useful in power plants, various industrial boilers for removing nitrogen oxides. ADVANTAGE - The selective reduction catalyst: stably maintains the structure even at a high temperature of 350 degrees C; and prevents aggregation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing a selective reduction catalyst comprising (a) preparing first solution comprising carrier including nitrogen-doped graphene oxide or nitrogen-doped reduced graphene oxide, (b) preparing second solution including manganese precursor and vanadium oxide, and a third solution including cerium precursor, (c) preparing first mixed solution by mixing the first to third solutions, and (d) preparing selective reduction catalyst by ultrasonically irradiating and stirring the first mixed solution.