화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.27, No.1, 76-82, January, 2010
DOI10.1007/s11814-010-0099-5  Export Citation
Catalytic decomposition of nitrous oxide over Fe-BEA zeolites: Essential components of iron active sites
Mi-Young Kim, Ki Won Lee, Jung-Hyun Park1, Chae-Ho Shin1, Jaeyoung Lee2, and Gon Seo†
  • School of Applied Chemical Engineering and The Research Institute for Catalysis, Chonnam National University, Youngbong-dong 300, Gwangju 500-757, Korea
  • 1Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
  • 2Electrochemical Reaction and Technology Laboratory (ERTL), Department of Environmental Science and Engineering, GIST, Oryong-dong 1, Gwangju 500-712, Korea
E-mail:
The catalytic decomposition of N2O was investigated over Fe-BEA zeolites treated with various methods such as reduction, steaming and dissolution with potassium nitrate and nitric acid solutions in order to deduce the essential components of the active sites for the decomposition. The iron species were characterized by XPS, XANES, ESR, NO adsorption, and linear sweep voltammetry. The reduction-treated Fe-BEA zeolite with the large amounts of Fe(II) and Fe(III) species showed the highest activity. On the contrary, the dissolution treatment with the potassium nitrate solution seriously deteriorated the catalytic activity of the Fe-BEA zeolite by agglomerating iron oxide clusters and interaction between iron and potassium atoms. The catalytic roles of Fe(II)/Fe(III) species and the negative effect of potassium on the catalytic activity of the Fe-BEA zeolites were discussed.
Keywords:N2O Decomposition;Fe-BEA Zeolite;Treatment;Active Site
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