Mechanism of CO selective catalytic reduction denitration on Fe–Mn/AC catalysts at medium and low temperatures under oxygen atmosphere

Shi, Zhe; Yang, Zhengyu; Dai, Meng; Wen, Zhenjing; Li, Wanjun; Zi, Gaoyong; Huang, Bangfu

doi:10.1016/j.cej.2022.137412

Cited by 22 publications

(15 citation statements)

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“…(2) Adsorbed CO and NO follow the Langmuir–Hinshelwood (L–H) mechanism to generate CO 2 and N 2 ( eqn (5) ). 5 The low-temperature SCR denitration reaction of NH 3 over carbon-based catalysts follows the Eley–Rideal (E–R) and L–H mechanisms. One study showed 16 that it mainly followed the L–H mechanism at low temperatures (150–230 °C).…”

Section: Resultsmentioning

confidence: 99%

“…However, because the activated carbon is in a state of loss during the denitration process, the NO conversion rate will not rise to its initial status, even if it gradually rises. 5 3.2 SEM and EDS Fig. 3 shows the surface microstructure of the Mn/AC catalyst.…”

Section: Low Temperature Co + Nh 3 Coupled Denitration Activitymentioning

confidence: 99%

“…2 also has a turning point change at 230 °C. 5 (3) During the catalytic denitration process of active metal components, 30 a small amount of Mn 2+ is oxidized to Mn 3+ by the adsorbed NO. NO itself is reduced to N 2 O (eqn (8)).…”

Section: Co + Nh 3 Coupling Low-temperature Denitration Mechanismmentioning

confidence: 99%

“…4 Carbon monoxide (CO) and ammonia (NH 3 ) are reducing agents for SCR. One technical advantage of CO-SCR 5,6 is that CO exists in automobile exhaust and industrial exhaust gases. Using it as a reducing agent to treat NO x treats waste with waste; however, this method has challenges.…”

Section: Introductionmentioning

confidence: 99%

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CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Low Temperature Co + Nh 3 Coupled Denitration Activitymentioning

confidence: 99%

Section: Co + Nh 3 Coupling Low-temperature Denitration Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

et al. 2022

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“…While the intensity of 3V 2 O 5 @AC-350 catalyst instead enhanced compared to that Environmental Science: Nano Paper of 3V 2 O 5 @AC-300 catalyst, which is probably because metal ions penetrate into the graphite microcrystalline structure, splitting the graphite microcrystalline structure into smaller ones due to the intense temperature and adequate energy provided by the high power lever, thereby generating a graphene network structure. 34,35 Raman spectroscopy was applied to get the structural phases of the 3V 2 O 5 @AC-X catalysts, and the results are demonstrated in Fig. 3f.…”

Section: Physical and Textural Propertiesmentioning

confidence: 99%

Unveiling the role of microwave induction on V₂O₅@AC catalysts with enhanced activity for low temperature NH₃-SCR reaction: an experimental and DFT study

cheng

Song

et al. 2023

Environ. Sci.: Nano

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Insights into the Electronic Structure Effect of SnMnO_x Nanorod Catalysts for Low‐Temperature Catalytic Combustion of o‐Dichlorobenzene

Wang

Dong

Tang

et al. 2023

Chemistry An Asian Journal

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For the catalytic combustion reaction of chlorinated volatile organic compounds (CVOCs), the redox properties and acid sites of the catalyst surface are key factors in determining the activity, selectivity, and chlorine‐resistance stability. Herein, a series of SnMnOx catalysts for the catalytic combustion of CVOCs were prepared by the changing of Sn‐doping way to regulate the electron valance state of Mn element, including reflux (R‐SnMnOx), co‐precipitation (C‐SnMnOx) and impregnation (I‐SnMnOx). It was discovered that the R‐SnMnOx catalyst had better activity and chlorine resistance than the R‐MnOx, C‐SnMnOx and I‐SnMnOx catalyst, and we discovered that the doping ways of Sn in MnOx catalyst could regulate greatly the surface acidity, active oxygen species, the chemical state of Mnn+ species, and redox ability. Especially, the R‐SnMnOx catalysts exhibit excellent water resistance, and the reasons were related to the strong interaction of Snn+ and Mnn+, which could promote obviously the dispersion of active Mn species, form a large number of acid sites, provide the abundant lattice oxygen species, and own the excellent redox ability, which accelerate the rate of charge transfer between Snn+ and Mnn+ (Sn4++Mn2+→Sn2++Mn4+) to produce the abundant active species and accelerate the rapid conversion of benzene and intermediates conversion.

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Mechanism of CO selective catalytic reduction denitration on Fe–Mn/AC catalysts at medium and low temperatures under oxygen atmosphere

Cited by 22 publications

References 50 publications

CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

Unveiling the role of microwave induction on V₂O₅@AC catalysts with enhanced activity for low temperature NH₃-SCR reaction: an experimental and DFT study

Insights into the Electronic Structure Effect of SnMnO_x Nanorod Catalysts for Low‐Temperature Catalytic Combustion of o‐Dichlorobenzene

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Mechanism of CO selective catalytic reduction denitration on Fe–Mn/AC catalysts at medium and low temperatures under oxygen atmosphere

Cited by 22 publications

References 50 publications

CO + NH3 coupling denitration at low temperatures over manganese/activated carbon catalysts

CO + NH3 coupling denitration at low temperatures over manganese/activated carbon catalysts

Unveiling the role of microwave induction on V2O5@AC catalysts with enhanced activity for low temperature NH3-SCR reaction: an experimental and DFT study

Insights into the Electronic Structure Effect of SnMnOx Nanorod Catalysts for Low‐Temperature Catalytic Combustion of o‐Dichlorobenzene

Contact Info

Product

Resources

About

CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

CO + NH₃ coupling denitration at low temperatures over manganese/activated carbon catalysts

Unveiling the role of microwave induction on V₂O₅@AC catalysts with enhanced activity for low temperature NH₃-SCR reaction: an experimental and DFT study

Insights into the Electronic Structure Effect of SnMnO_x Nanorod Catalysts for Low‐Temperature Catalytic Combustion of o‐Dichlorobenzene