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Citation: HUANG Tian-jiao, ZHANG Ya-ping, ZHUANG Ke, LU bin, ZHU Yi-wen, SHEN Kai. Preparation of honeycombed holmium-modified Fe-Mn/TiO2 catalyst and its performance in the low temperature selective catalytic reduction of NOx[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(3): 319-327. shu

Preparation of honeycombed holmium-modified Fe-Mn/TiO2 catalyst and its performance in the low temperature selective catalytic reduction of NOx

  • 1.

    Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

  • 2.

    State Power Environmental Protection Research Institute, Nanjing 210031, China

  • Corresponding author: ZHANG Ya-ping, amflora@seu.edu.cn
  • Received Date: 13 September 2017
    Revised Date: 11 December 2017

    Fund Project: National Key R&D Plan 2017YFB0603201Environmental Nonprofit Industry Research Subject 2016YFC0208102The project was Supported by the Key Research Program of Jiangsu Province(BE2015677), Environmental Nonprofit Industry Research Subject(2016YFC0208102)and National Key R&D Plan (2017YFB0603201)The project was Supported by the Key Research Program of Jiangsu Province BE2015677

Figures(7)

  • A series of honeycombed holmium-modified Fe-Mn/TiO2 catalysts were prepared by moulding method and their performance in the low temperature selective catalytic reduction (SCR) of NOx was investigated. The forming process was optimized as:the mass content of water in the forming additives is 40%, in which 10% structure strengthening agent (glass fiber), 5% binder (carboxymethyl cellulose), 10% squeezing agent (glycerin), 5% pore-forming agent (activated carbon) and a little lubricants (liquid paraffin) are added. The honeycombed Fe-Ho-Mn/TiO2 catalyst prepared under these conditions exhibits excellent performance in the low-temperature SCR of NOx; the conversion of NOx exceeds 90% at 120℃ and a good resistance to SO2 and H2O is observed when the content of SO2 in the stream is lower than 0.02%. The characterization results indicated that in comparison with the parent powder holmium-modified Fe-Ho-Mn/TiO2 catalyst, the honeycombed catalyst exhibits lower surface area, more particle aggregation, and less acid sites and Mn4+ species on the surface, which has a certain negative influence on the catalytic performance of Fe-Ho-Mn/TiO2.
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