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http://dx.doi.org/10.7464/ksct.2013.19.3.287

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

Ha, Ho-Jung (Department of Chemical Engineering, Changwon National University)
Hong, Ju-Hwan (Department of Chemical Engineering, Changwon National University)
Choi, Joon-Hwan (Korea Institute of Material Science)
Han, Jong-Dae (Department of Chemical Engineering, Changwon National University)
Publication Information
Clean Technology / v.19, no.3, 2013 , pp. 287-294 More about this Journal
Abstract
The $NH_3$-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 $NH_4$-BEA and $NH_4$-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 $200{\sim}250^{\circ}C$. With respect to the Fe-zeolite catalyst, the Cu-zeolite catalyst showed a higher activity in the SCR reaction at low temperatures below $250^{\circ}C$. BEA zeolite based catalyst exhibited good activity in comparison with ZSM-5 zeolite based catalyst at low temperatures below $250^{\circ}C$.
Keywords
NO; $NH_3$; Cu; Fe; Zeolite;
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Times Cited By KSCI : 1  (Citation Analysis)
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