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Efficient One-Pot Preparation of Cu-SSZ-13 Materials using Cooperative OSDAs for their Catalytic Application in the SCR of NOx

Authors

  • Raquel Martínez-Franco,

    1. Instituto de Tecnología Química, Universidad Politécnica de Valencia, Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos, s/n, 46022 Valencia (Spain), Fax: (+34) 963877809
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  • Dr. Manuel Moliner,

    Corresponding author
    1. Instituto de Tecnología Química, Universidad Politécnica de Valencia, Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos, s/n, 46022 Valencia (Spain), Fax: (+34) 963877809
    • Instituto de Tecnología Química, Universidad Politécnica de Valencia, Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos, s/n, 46022 Valencia (Spain), Fax: (+34) 963877809

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  • Dr. Joakim R. Thogersen,

    1. Haldor Topsøe A/S, Nymøllevej 55, DK-2800 Lyngby (Denmark)
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  • Prof. Avelino Corma

    Corresponding author
    1. Instituto de Tecnología Química, Universidad Politécnica de Valencia, Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos, s/n, 46022 Valencia (Spain), Fax: (+34) 963877809
    • Instituto de Tecnología Química, Universidad Politécnica de Valencia, Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos, s/n, 46022 Valencia (Spain), Fax: (+34) 963877809

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Abstract

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 NOx. 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.

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