Non‐thermal plasma‐assisted catalytic oxidation of NO in a dielectric barrier discharge reactor packed with MOx/Al2O3 (M = Mn or Co) as catalysts

Wang, Jiangen; Yi, Honghong; Tang, Xiaolong

doi:10.1002/jctb.6125

Cited by 6 publications

(15 citation statements)

References 27 publications

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“…When SED was more than 303.6 J L -1 , the conversion efficiency decreased with the increase of SED, which was mainly attributed to the existence of Equation ( 4). [1] In this case, the produced NO 2 Small 2022, 18, 2106680…”

Section: Resultsmentioning

confidence: 97%

“…As presented in Figure 4d, the firm peaks around 3447 and 1638 cm −1 could be attributed to the stretching vibration of the combination of hydroxyl groups and OH of the physically adsorbed water. [1] The results showed that the vibration frequencies of SO 3…”

Section: Resultsmentioning

confidence: 99%

“…When SED was more minor than 303.6 J L -1 , the conversion efficiency increased with the increase of SED. In this case, as shown in Equations ( 2) and (3), [1,2] the active oxygen species, such as O* and O 3 , produced at a high concentration by the NTP, can oxidize NO to NO 2 . When SED was more than 303.6 J L -1 , the conversion efficiency decreased with the increase of SED, which was mainly attributed to the existence of Equation ( 4).…”

Section: Resultsmentioning

confidence: 99%

“…The demand for human health and the global environment requires more advanced concepts to design efficient and environment-friendly systems for controlling the industry flue gas. [1] In addition to the traditional selective catalytic reduction(SCR) method widely used in flue gas denitrification, the selective catalytic oxidation of NO to NO 2 was another promising methods due to the advantages of flexibility, controllability, and applied space effect with high-energy electrons and active radicals produced by dielectric barrier discharge (DBD) reactor, thus reducing the activation energy and improving the conversion efficiency of NO. [17][18][19][20] Based on the above considerations, we aim to develop catalysts with the spatial hetero-shelled interface for superior NO oxidation and excellent sulfur resistance ability by coupling the NTP technology and hierarchical catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…The demand for human health and the global environment requires more advanced concepts to design efficient and environment‐friendly systems for controlling the industry flue gas. [ 1 ] In addition to the traditional selective catalytic reduction(SCR) method widely used in flue gas denitrification, the selective catalytic oxidation of NO to NO 2 was another promising methods due to the advantages of flexibility, controllability, and applied environmental compatibility. [ 2 ] However, the coexistence of NO and SO 2 in the flue gas makes the deactivation of the traditional catalysts, due to the competition adsorption of SO 2 and NO on the active sites of the catalyst surface, resulting in the change of catalyst structure and the decrease of NO conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Hetero‐Shelled Hollow Structure Coupled with Non‐Thermal Plasma Inducing Spatial Charge Rearrangement for Superior NO Conversion and Sulfur Resistance

Liao

Zhao

Yang

et al. 2022

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environmental compatibility. [2] However, the coexistence of NO and SO 2 in the flue gas makes the deactivation of the traditional catalysts, due to the competition adsorption of SO 2 and NO on the active sites of the catalyst surface, resulting in the change of catalyst structure and the decrease of NO conversion efficiency.Recently, many researchers have been focused on tuning the structures of the catalysts to avoid the poison effect caused by SO 2 . The design of active components with the construction of a unique hollow structure presents the enhanced catalytic performance on NO oxidation with the existence of SO 2 . [3] The cavity confinement effect of the hollow nanoreactor could realize the impact on the unique electronic and geometric structure for enhancing the charge transfer and separation in the temporal-spatial catalytic process. [4] The charge transfer induced by the hetero-shelled hollow structure may change the catalytic activity and selectivity. [5] Besides, more interesting catalysts have been developed and applied to NO oxidation, such as composites structure control from one dimensional to three dimensional, [6,7] surface active site including defects engineering, [8,9] and catalytic sites tuning on synergetic conversion. [2,10] Non-thermal plasma(NTP) technology has attracted lots of research attention for NO catalytic removal. [11] The combination of NTP and catalyst can promote the formation of reaction intermediates on the catalyst surface, thus reducing the activation energy of the reaction, and achieving the rapid selective catalytic oxidation of NO at low temperatures. [12][13][14][15] In fact, many researchers attentions have been paid to tune the engineering parameters of the NTP and the advanced catalyst structure design without exploring the synergetic effect on the temporal-spatial structure, which may induce spatial charge rearrangement and trigger the micro-domain surficial species reaction. For instance, Cui et al. [16] studied the process of simultaneous oxidation of NO and SO 2 using non-thermal plasma coupled with catalyst on engineering parameters control. They found that the oxidation efficiency of both NO and SO 2 could be significantly improved in conjunction with further oxidation by the wet electrostatic precipitator (WESP). Furthermore, because of the unique properties of the hetero-shelled hollow structure catalyst, it may also be easier to produce synergistic Facilitating the mass transfer and spatial charge separation is a great challenge for achieving efficient oxidation of NO and outstanding sulfur resistance. Herein, a hydrothermal-assisted confinement growth technique is used to fabricate well-defined three-dimensional CuOx@MnOx hetero-shelled hollow-structure catalysts. By integrating the coupled plasma space reactor and the porous hierarchical structure of the catalyst, excellent stability (10 h) and high conversion of NO (93.86%) are reached under the concentration of SO 2 (1000 mg m -3 ) and NO (200 mg m -3 ). Impressively, precise surface characterization ...

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%