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Citation: LIU Ya-ming, SHU Hang, XU Qi-sheng, ZHANG Yu-hua, YANG Lin-jun. FT-IR study of the catalytic oxidation of SO2 during the process of selective catalytic reduction of NO with NH3 over commercial catalysts[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(8): 1018-1024. shu

FT-IR study of the catalytic oxidation of SO2 during the process of selective catalytic reduction of NO with NH3 over commercial catalysts

  • 1.

    1. Electric Power Research Institute of Guangdong Power Grid Company, Guangzhou 510080, China;

  • Corresponding author: YANG Lin-jun, 
  • Received Date: 27 March 2015
    Available Online: 21 May 2015

    Fund Project: 广东电网有限责任公司科技项目(K-GD2013-055) (K-GD2013-055)国家重点基础研究发展规划(973计划,2013CB228505)。 (973计划,2013CB228505)

  • This work briefly reveals the process of catalytic oxidation of SO2 and the influences of NH3, NO and O2 on the oxidation behavior based on FT-IR.It suggests that the process of oxidation of SO2: the absorption of SO2 on V2O5 sites occupying its O atom in the form of SO2-3; reaction between absorbed SO2 and O atom in V5+-OH to form an VOSO4-like structure;reoxidation of V4+ to V5+ by O2,promoting the transformation from VOSO4-like intermediate to SO3 and V2O5. NH3 and NO competitively absorb with SO2,suppressing its oxidation behavior. The removal of NOx and the oxidation of SO2 is the relationship of mutual inhibition.
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