Plasma-catalytic high-efficiency oxidation of NO over Co-Mn/Ti catalysts using surface dielectric barrier discharge plasma

Mn–Co binary oxides for low‐temperature catalytic oxidation of NO: effect of SO2 and regeneration

“…Co 2+ and higher valence Mn ions (Mn 3+ , Mn 4+ ) played very important roles in the catalytic reaction. According to our previous study, it was found that Co 2+ acts as the main active bits in the oxidation reaction of NO 37 , and high valence Mn ions are highly reactive species 34 . The fact that these important species became less available lead to the decrease of the catalyst activity.…”

“…7 that the content of Co 2+ was found to be significantly reduced when poisoned and that the content of higher valence Mn (Mn 3+ , Mn 4+ ) also According to our previous study, it was found that Co 2+ acts as the main active bits in the oxidation reaction of NO 37 , and high valence Mn ions are highly reactive species. 34 The fact that these important species became less available lead to the decrease of the catalyst activity. After regeneration, it was found that the content of Co 2+ and higher valence Mn ions would increase, but could not be recovered to their initial state.…”

“…Jia et al 33 used hydrothermal method to synthesize Mn Fe binary catalysts, exhibiting excellent NO oxidation performance due to its excellent reduction, abundant oxygen species and the synergistic effect between Mn and Fe. Mn-based catalysts with Co doping could enhance oxygen mobility and active oxygen species, 34,35 form special spinel structures, 31 and strengthen the resistance to SO 2 and NO oxidation activity. 36 In our previous work, 27,37,38 it was proved that Mn Co spinel catalysts with homogeneous spherical structure, high specific surface area, high proportion of chemisorbed oxygen, and excellent synergistic effect between Mn and Co also exhibited excellent NO oxidation performance.…”

A Critical Review of Recent Progress and Perspective in Practical Denitration Application

“…The reduction method has the characteristics of high efficiency, cleanliness, and mildness; NO x removal can be realized at low temperature at present [24][25][26]. The plasma method is used to modify the surface of the catalyst, the dispersion of active species can be improved by plasma treatment, and the stability and low temperature activity of catalyst can be improved [27,28].Seldom, if ever, does a comprehensive article to introduce the current situation and treatment methods of removing NO x . In this paper, we tried to renovate, classify, and summarize the significant perspectives and most relevant findings reported in recent research articles and earlier reviews generalizing the mechanism analysis and research progress of NO x removal by adsorption, oxidation, reduction, and plasma methods, which can provide means for promoting the technological progress of pollution prevention, maintaining healthy development of factories continuously, studying the methods of removing NO x deeply, and mastering different technologies of removing NO x , as well as providing guidance for controlling the emission of NO x from motor vehicles such as diesel, gasoline, and so on.…”

“…The reduction method has the characteristics of high efficiency, cleanliness, and mildness; NO x removal can be realized at low temperature at present [24][25][26]. The plasma method is used to modify the surface of the catalyst, the dispersion of active species can be improved by plasma treatment, and the stability and low temperature activity of catalyst can be improved [27,28].…”