Abstract: Formation of nitrogen oxides in the oxidation of pyridine over different γ-Al₂O₃supported oxide catalysts has been studied in the temperature range of 200～700℃,The oxi-dation activity and the ability to control NO_x formation were found to be decreased in the or-der :Ag-O>Cu-O>Mn-O>Cr-O>Fe-O>Co-O>Ni-O>V-O>Ce-O.NO_x formation con-trol ability appeared in relation to the basicity of the catalyst surface.

Key words: pyridine, catalytic oxidation, supported metal oxide catalyst, NO_x formation con-trol