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PTFE-Modified Mn-Co-Based Catalytic Ceramic Filters with H 2 O Resistance for Low-Temperature NH 3 -SCR

Author

Listed:
  • Kun Li

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Tao Zhou

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Xinqiang Xu

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Changye Han

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Hua Zhang

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

  • Jiang Jin

    (College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)

Abstract

Mn-Co-based catalysts were loaded to ceramic filters element by impregnation for the coprocessing of dust and nitrogen oxide (NO x ) in flue gas. The influence of the Mn/Co ratio and loading on the catalytic performance was investigated. The Mn-Co-based catalytic ceramic filter with a Mn/Co molar ratio of 2/1 can achieve 99% NO conversion by selective catalytic reduction of NO x with NH 3 (NH 3 -SCR) in the temperature range of 100−180 °C, but its resistance to H 2 O was relatively poor. The filter element was modified by PTFE to improve the H 2 O resistance. After modification, the catalytic ceramic filter showed superior resistance to H 2 O and SO 2 at low temperatures (100–180 °C) and satisfactory self-cleaning performance.

Suggested Citation

  • Kun Li & Tao Zhou & Xinqiang Xu & Changye Han & Hua Zhang & Jiang Jin, 2022. "PTFE-Modified Mn-Co-Based Catalytic Ceramic Filters with H 2 O Resistance for Low-Temperature NH 3 -SCR," Sustainability, MDPI, vol. 14(9), pages 1-11, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5353-:d:805125
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