Method for preparing a catalyst for purifying nitrogen oxides (NO_x)

摘要

The present invention relates to a method for producing a catalyst for purifying nitrogen oxides (NOx), and more particularly, to preparing a catalyst for purifying nitrogen oxides, by adding Ba and La to the Rh zeolite, the active temperature range is increased to increase the space velocity. It relates to a method for producing a catalyst for NOx purification that can improve the rate.