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Volume 42 Issue 10
Oct.  2024
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2024  >  42(10): 112-120
LIU Yiwei, LI Benhang, WEI Zizhang, LIU Xiaoyao, HE Xu, LIANG Gaolei, MA Xiaodong. PREPARATION AND LOW-TEMPERATURE DENITRIFICATION PROPERTIES OF Mn-DOPED POROUS CAROBON MATRIX COMPOSITE FUNCTIONAL MATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 112-120. doi: 10.13205/j.hjgc.202410014
Citation: LIU Yiwei, LI Benhang, WEI Zizhang, LIU Xiaoyao, HE Xu, LIANG Gaolei, MA Xiaodong. PREPARATION AND LOW-TEMPERATURE DENITRIFICATION PROPERTIES OF Mn-DOPED POROUS CAROBON MATRIX COMPOSITE FUNCTIONAL MATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 112-120. doi: 10.13205/j.hjgc.202410014
shu

PREPARATION AND LOW-TEMPERATURE DENITRIFICATION PROPERTIES OF Mn-DOPED POROUS CAROBON MATRIX COMPOSITE FUNCTIONAL MATERIALS

doi: 10.13205/j.hjgc.202410014

  • 1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China;

  • 2. Tianjin Academy of Eco-Environmental Sciences, Tianjin 300191, China

  • Received Date: 2024-01-25
    Available Online: 2024-11-30
    Abstract
  • Under the background of "Dual Carbon Goal", the preparation of biochar using biomass as the raw material instead of coal-based carbon for low-temperature denitrification of sintering flue gas in iron and steel industry has become a research hotspot. In this paper, using biomass as raw material, the effects of nitric acid oxidation, Mn doping amount, binder addition and activation conditions on material properties were investigated through single-factor experiments, and Mn-doped porous carbon matrix composite functional materials with the required mechanical strength, high denitrification efficiency and good catalytic stability were prepared. Moreover, the structure-activity relationship between material composition, structure and low-temperature denitrification activity was initially explored through a series of characterization. The results showed that the composite functional material with the best comprehensive properties was obtained by doping the active component Mn with the addition of mixed binder and water vapor activation. The steady-state removal rate of NO at low temperature (120 ℃) was 66.4%, which was about 7 times that of the coal-based activated carbon. The denitrification activity was also significantly higher than that of coal-based activated carbon under simulated wet flue gas conditions. The research results provide a new idea for the low-temperature SCR denitrification of sintering flue gas in iron and steel industry.
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