Abstract
Two types of Pt/Al 2O 3 catalysts were prepared by individual solvothermal and conventional impregnation methods, and the deNOx activity using hydrogen as a reducer was tested under oxygen coexistence condition. The Pt/Al 2O 3 catalyst prepared by the solvothermal method provided higher N 2 selectivity than that by the impregnation one. The characterization based on XRD and TEM revealed that the Pt metal particles well grew on the Al 2O 3 support when using the solvothermal method. Temperature programmed hydrogen desorption (H 2-TPD) showed that the Pt/Al 2O 3 catalyst prepared by the solvothermal method adsorbed hydrogen more strongly than that by the impregnation one, which corresponded to the high hydrogenation ability toward NOx.
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