catalyst method for reducing NOx, and means for reducing NOx

catalyst method for reducing NOx, and device to reduce NOx. a catalyst for selective catalytic reduction of NOx with one or more transition metals selected from Cr, Mn, Fe, Co, ce, Ni, Cu, Zn, Ga, Mo, RU, RH, Pd, Ag, In, Sn, Re go pt, and mixtures thereof supported on a carrier, wherein the carrier is a molecular sieve having at least one intergrowth phase having at least two three-dimensional frame structures of different small pores.