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Characterization of Low Temperature Selective Catalytic Reduction over Ti Added Mn-Cu Metal Oxides

Ti가 첨가된 Mn-Cu 혼합산화물을 이용한 저온 SCR 반응 특성

  • Lee, Hyun Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Park, Kwang Hee (R&D Center, Alantum Corp.) ;
  • Cha, Wang Seog (Department of Environmental Engineering, University of Kunsan)
  • 이현희 (경기대학교 일반대학원) ;
  • 박광희 (환경에너지시스템공학과) ;
  • 차왕석 (군산대학교 환경공학과)
  • Received : 2013.05.13
  • Accepted : 2013.09.05
  • Published : 2013.12.10

Abstract

In this study, Ti added Mn-Cu mixed oxide catalysts were prepared by a co-precipitation method and used for the low temperature (< $200^{\circ}C$) selective catalytic reduction (SCR) of NOx with $NH_3$. Physicochemical properties of these catalysts were characterized by BET, XRD, XPS, and TPD. Mn-Cu mixed oxide catalysts were found to be amorphous with a large surface and they showed high SCR activity. Experimental results showed that the addition of $TiO_2$ to Mn-Cu oxide enhanced the SCR activity and $N_2$ selectivity. Ti addition led to the chemically adsorbed oxygen species that promoted the oxidation of NO to $NO_2$ and increased the number of $NH_3$ adsorbed-sites such as $Mn^{3+}$.

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