A Novel Nano-sized Catalyst CeO₂-CuO/Hollow ZSM-5 for NO _x Reduction with NH₃

Abstract

Hollow-ZSM-5 was synthesized by a traditional hydrothermal method without alcohol, and a novel na-no-sized Ce-Cu/hollow ZSM-5 sample was prepared by conventional incipient wetness impreganation. The catalysts were characterized by TEM, SEM, XRD, NMR and N₂ adsorption-desorption. The results indicate that the hollow-ZSM-5 has a good MFI structure with large surface area. The synthesized CeO₂-CuO/hollow ZSM-5 showed an excellent catalytic activity for NO _x conversion(90% NO _x conversion were obtained) in the temperature range of 340–550 °C under GHSV=480000 mL·g^‒1·h^‒1 due to its appropriate redox ability and acidity.

Keywords

Hollow-ZSM-5 / Selective catalytic reduction / Hydrothermal method / NO _x conversion

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