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A Study on the Reaction Characteristics and Efficiency Improvement of High-temperature SCR Catalyst

고온 SCR 촉매의 반응 특성 및 효율 증진에 관한 연구

  • Nam, Ki Bok (Department of Environmental Energy Systems Engineering, Graduate school of Kyonggi University) ;
  • Kang, Youn Suk (Department of Environmental Energy Systems Engineering, Graduate school of Kyonggi University) ;
  • Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Kyonggi University)
  • 남기복 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 강연석 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 홍성창 (경기대학교 환경에너지시스템공학과)
  • Received : 2015.08.12
  • Accepted : 2015.09.16
  • Published : 2015.12.10

Abstract

In this paper the selective reduction catalyst (SCR) for controlling the NOx at high temperature range was studied. XRD and FT-IR BET analysis was also performed to determine the structural properties and adsorption/desorption characteristics of the catalyst. In the case of anatase $TiO_2$ support, a negligible NOx conversion was observed, but the $W/TiO_2$ catalyst made using W as a active metal showed an excellent ability to remove NOx. In particular, the $W/TiO_2$ exhibited a rapid increase in the catalytic activity due to the presence of W for the NOx conversion compared to that of using the pure $TiO_2$ at a high temperature range over $400^{\circ}C$. In addition, the phenomenon of reduced reaction activity due to the heat shock for a long time was found to be suppressed.

Keywords

NOx;$TiO_2$;Catalyst;W;metal

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