Review on Non-thermal Plasma Synergistic Catalytic Reduction of NOx
Non-thermal plasma(NTP)synergistic catalytic reduction denitrification technology is an emerging flue gas treatment method that combines the advantages of NTP and selective catalytic reduction(SCR)technology.It generates plasma at low temperatures,using high-energy electrons,ions,and free radicals to react with nitrogen oxides(NOx)to achieve denitrification.This review delves into the research progress of NTP-SCR technology,including the generation and fundamental principles of plasma,catalyst improvement,reaction mechanisms,numerical simulation studies,as well as the application potential and challenges of this technology in the field of air purification.NTP-SCR demonstrates high denitrification efficiency at low temperatures,reduces the generation of harmful by-products,and lowers energy consumption.NTP treatment can enhance catalyst performance,especially the activity and durability of catalysts in low-temperature and harsh flue gas environments.Mechanism studies indicate that NTP can activate the catalyst surface and promote the reduction process of NOx.Meanwhile,the application of numerical simulation provides theoretical guidance for the design and operation of plasma reactors.Although NTP-SCR technology has significant potential,it still faces some challenges,including long-term stability,control of product selectivity,and how to translate laboratory research results into industrial applications.Future research will focus on developing more efficient and stable NTP synergistic catalysts,optimizing process parameters,and further exploring the synergistic action mechanism between plasma and catalysts.
non-thermal plasmareduction of NOxsynergistic catalyticair purificationnitrogen oxide
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