Efficient One‐Pot Preparation of Cu‐SSZ‐13 Materials using Cooperative OSDAs for their Catalytic Application in the SCR of NO_<i>x</i>

The cooperative use of the Cu‐tetraethylenepentamine complex and N , N , N ‐trimethyl‐1‐adamantammonium as organic structure‐directing agents (OSDAs) enabled the rationalized “one‐pot” preparation of Cu‐containing SSZ‐13 zeolites. A detailed study of different synthetic variables permitted the control of the Si/Al and Cu/(Si+Al) ratios in the final solids. Cu‐SSZ‐13 molecular sieves synthesized in alkaline media demonstrate excellent catalytic activities and good hydrothermal stabilities for the selective catalytic reduction of NO x . Finally, the effect of synthesis media on the catalytic active sites is also demonstrated and a remarkable activity loss for samples synthesized in fluoride media is observed.