Zeolite material from the kfi - type and use in the scr - catalysis

摘要

The present invention relates to a copper-containing zeolites from the kfi - type, wherein the zeolite 1 to 4,5 w -% of copper. In addition, on the invention is a process for the production of the zeolites containing copper is directed to the invention as well as to the use of the zeolite in the scr - catalysis. Further objects of the invention, a wash - coat, which the zeolite according to the invention, a scr - catalyst, the zeolite according to the invention contains, as well as an exhaust gas purifying system, which comprises the scr - catalyst.