Selective Catalytic Reduction of NOx with Ammonia over Cu and Fe Promoted Zeolite Catalysts 


Vol. 19,  No. 3, pp. 287-294, Sep.  2013
10.7464/ksct.2013.19.3.287


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  Abstract

The NH3-selective catalytic reduction (SCR) reaction of NO with excess of oxygen were systematically investigated over Cu-zeolite and Fe-zeolite catalysts. Cu-zeolite and Fe-zeolite catatysts to adapt the SCR technology for mobile diesel engines were prepared by liquid ion exchange and incipient wetness impregnation of NH4-BEA and NH4-ZSM-5 zeolites. The catalysts were characterized by BET, XRD, FE-TEM (field emission transmission electron microscopy) and SEM/EDS. The SCR examinations performed under stationary conditions showed that the Cu-exchanged BEA catalyst revealed pronounced performance at low temperatures of 200-250 ℃. With respect to the Fe-zeolite catalyst, the Cu-zeolite catalyst showed a higher activity in the SCR reaction at low temperatures below 250 ℃. BEA zeolite based catalyst exhibited good activity in comparison with ZSM-5 zeolite based catalyst at low temperatures below 250 ℃.

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  Cite this article

[IEEE Style]

H. HJ, H. JH, C. JH, H. JD, "Selective Catalytic Reduction of NOx with Ammonia over Cu and Fe Promoted Zeolite Catalysts," Clean Technology, vol. 19, no. 3, pp. 287-294, 2013. DOI: 10.7464/ksct.2013.19.3.287.

[ACM Style]

Ha HJ, Hong JH, Choi JH, and Han JD. 2013. Selective Catalytic Reduction of NOx with Ammonia over Cu and Fe Promoted Zeolite Catalysts. Clean Technology, 19, 3, (2013), 287-294. DOI: 10.7464/ksct.2013.19.3.287.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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