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A Study on Characterization for Low Temperature SCR Reaction by $Mn/TiO_2$ Catalysts with Using a Various Commercial $TiO_2$ Support  

Kwon, Dong Wook (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Choi, Hyun Jin (Department of Green Process R&D, Green Chemistry & Manufacturing System Division, Korea Institute of Industrial Technology)
Park, Kwang Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.23, no.2, 2012 , pp. 190-194 More about this Journal
Abstract
10 wt% Mn supported on various commercial $TiO_2$ catalysts were prepared by wet-impregnation method for the low temperature selective catalytic reduction (SCR) of NO with $NH_3$. A combination of various physico-chemical techniques such as BET, XRD, XPS and TPR were used to characterize these catalysts. MnOx surface densities on MnOx/$TiO_2$ catalyst were related to surface area. As MnOx surface density lowered with high dispersion, the SCR activity for low temperature was increased and the reduction temperature ($MnO_2$ ${\rightarrow}$ $Mn_2O_3$) of surface MnOx was lower. For a high SCR, MnOx could be supported on a high surface area of $TiO_2$ and should be existed a high dispersion of non-crystalline species.
Keywords
SCR; catalyst; manganese oxide; NOx removal;
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