NOx STORAGE CATALYST AND METHOD FOR PREPARING THE SAME

The present invention provides a first step of preparing a synthetic milk solution comprising a zeolite raw material, a structural inducer, a complexing material, and a solvent that is a source of silica and alumina, a second step of reacting the synthetic mother solution to prepare a CHA zeolite, and a method for the preparation of a NOx storage catalyst comprising a third step of carrying a transition metal and the transition metal and other rare earth metals in the prepared CHA zeolite.