The invention relates to a KFI-type copper-containing zeolithe comprising 1 - 4,5 wt.% copper. The invention also relates to a method for producing the claimed copper-containing zeolithe and to the use thereof in the SCR catalyst. The invention further relates to a wash-coat which contains the claimed zeolith, a SCR catalyst which contains the claimed zeolith and a waste gas cleaning system which contains the SCR catalyst.
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