After nearly three years of research, the Atmospheric Environment Research Center of the Chongqing Institute of Green Intelligent Technology of the Chinese Academy of Sciences has made a series of research progresses in the field of flue gas denitrification in coal-fired power plants. The relevant research results are published in Applied Catalysis B: Environmental, Applied Catalysis A: General Academic journals such as Applied Surface Science and Chinese Journal of Catalysis.

Ammonia-selective catalytic reduction (NH3-SCR) nitrogen oxide (NOx) technology is one of the most effective means of denitrification of flue gas from coal-fired power plants. The conventional commercialized V2O5-WO3/TiO2 denitration catalysts have the disadvantages of narrow working temperature window, poor low temperature denitrification performance, large amount of high temperature N2O production, easy oxidation of SO2 to SO3 and enhanced hazards, and V species biological toxicity. The development of environment-friendly non-V-based denitration catalysts has become a hot topic of research today. However, how to effectively improve its low-temperature denitration performance, widen the operating temperature window, and enhance water and sulfur resistance has been a research bottleneck in the field. For this reason, on the basis of previous research, the research team succeeded in preparing a series of low-temperature, wide-temperature operating temperature window features and superiority through strategies such as crystal phase structure regulation, acid treatment, solvent modulation, optimization of preparation methods, and ion doping. The Ce-based and Mn-based denitration catalysts that resist water and sulfur resistance, and the structure-activity relationships of the prepared catalysts and the NH3-SCR reaction mechanism by means of various physical and chemical properties test methods and in situ characterization methods Conduct in-depth studies.

This research was supported by the National Natural Science Foundation of China (21507130), the Chongqing Science and Technology Innovation Leader Project (cstckjcxljrc13), the Chongqing Municipal Application Development Plan Major Project (cstc2014yykfC20003), and the Chongqing Science and Technology Platform and Base Construction Project—Engineering Technology Research Center (cstc2014pt- Gc20002), Chongqing Basic Science and Advanced Technology Research (cstc2016jcyjA0070) and Beijing National Laboratory for Molecular Sciences (20140142) and other projects.

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