화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.18, No.5, 725-740, September, 2001
DOI10.1007/BF02706393  Export Citation
Water Tolerance of DeNOx SCR Catalysts Using Hydrocarbons: Findings, Improvements and Challenges
Moon Hyeon Kim, and In-Sik Nam1, †
  • Department of Environmental Engineering, Taegu University, 15 Naeri, Jinryang, Kyungsan 712-714, Korea
  • 1Department of Chemical Engineering/School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), P.O. Box 125, Pohang 790-600, Korea
E-mail:
The recent developments on the effect of H2O on deNOx performance of a variety of SCR catalysts selectively removing NOx by hydrocarbons in excess oxygen have been reviewed. In particular, the water tolerance of the catalyst is summarized to illustrate a common deactivation behavior of SCR catalyst for the reduction of NO by hydrocarbons under wet feed gas mixture. Earlier proposals elucidating the possible cause of the catalyst deactivation under wet conditions are discussed, focusing mainly on the catalyst characteristics. A promising way, which can improve the water tolerance and the hydrothermal stability of zeolite-based SCR catalyst, is also described.
Keywords:NOx Reduction;Water Tolerance;Hydrocarbon;Deactivation;SCR;DeNOx Catalyst;Zeolite;Mordenite;Ferrierite
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