Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts
NH<sub>3</sub> selective catalytic reduction (NH<sub>3</sub>-SCR) is the most prevalent and effective method for removing nitrogen oxides. Over the past few decades, manganese (Mn)-based catalysts have demonstrated strong catalytic activity and have been extensively studied f...
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MDPI AG
2024-11-01
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| author | Yuming Yang Xue Bian Feng Xie Yuting Bai Jing Wang |
| author_facet | Yuming Yang Xue Bian Feng Xie Yuting Bai Jing Wang |
| author_sort | Yuming Yang |
| collection | DOAJ |
| description | NH<sub>3</sub> selective catalytic reduction (NH<sub>3</sub>-SCR) is the most prevalent and effective method for removing nitrogen oxides. Over the past few decades, manganese (Mn)-based catalysts have demonstrated strong catalytic activity and have been extensively studied for low-temperature NH<sub>3</sub>-SCR reactions. This paper provides an in-depth introduction to four forms of Mn-based catalysts: single manganese oxide-based catalysts, binary Mn-based metal oxide catalysts, ternary and multivariate Mn-based metal oxide catalysts, and nano-Mn-based catalysts. Advances have been made in enhancing Mn-based catalysts’ redox performance and acidity, increasing the active component’s dispersion, lowering binding energy, enlarging specific surface area, raising the Mn<sup>4+</sup>/Mn<sup>3+</sup> ratio, and enriching surface adsorbed oxygen by optimizing preparation methods, altering the oxidation state of active components, modifying crystal phases, and adjusting morphology and dispersion, along with various metal modifications. The mechanism of low-temperature NH<sub>3</sub>-SCR reactions has been elucidated using various characterization techniques. Finally, the research directions and future prospects of Mn-based catalysts for low-temperature NH<sub>3</sub>-SCR reactions are discussed, aiming to accelerate the commercial application of new Mn-based catalysts. |
| format | Article |
| id | doaj-art-73f97569451348d9a20eaeeb9de2b984 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-73f97569451348d9a20eaeeb9de2b9842025-08-20T02:08:01ZengMDPI AGApplied Sciences2076-34172024-11-0114221019810.3390/app142210198Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction CatalystsYuming Yang0Xue Bian1Feng Xie2Yuting Bai3Jing Wang4School of Metallurgy, Northeastern University, No. 3–11 Wenhua Road, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, No. 3–11 Wenhua Road, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, No. 3–11 Wenhua Road, Shenyang 110819, ChinaSchool of Metallurgy and Materials Engineering, Liaoning Institute of Science and Technology, Benxi 117004, ChinaSchool of Metallurgy, Northeastern University, No. 3–11 Wenhua Road, Shenyang 110819, ChinaNH<sub>3</sub> selective catalytic reduction (NH<sub>3</sub>-SCR) is the most prevalent and effective method for removing nitrogen oxides. Over the past few decades, manganese (Mn)-based catalysts have demonstrated strong catalytic activity and have been extensively studied for low-temperature NH<sub>3</sub>-SCR reactions. This paper provides an in-depth introduction to four forms of Mn-based catalysts: single manganese oxide-based catalysts, binary Mn-based metal oxide catalysts, ternary and multivariate Mn-based metal oxide catalysts, and nano-Mn-based catalysts. Advances have been made in enhancing Mn-based catalysts’ redox performance and acidity, increasing the active component’s dispersion, lowering binding energy, enlarging specific surface area, raising the Mn<sup>4+</sup>/Mn<sup>3+</sup> ratio, and enriching surface adsorbed oxygen by optimizing preparation methods, altering the oxidation state of active components, modifying crystal phases, and adjusting morphology and dispersion, along with various metal modifications. The mechanism of low-temperature NH<sub>3</sub>-SCR reactions has been elucidated using various characterization techniques. Finally, the research directions and future prospects of Mn-based catalysts for low-temperature NH<sub>3</sub>-SCR reactions are discussed, aiming to accelerate the commercial application of new Mn-based catalysts.https://www.mdpi.com/2076-3417/14/22/10198nitrogen oxideselective catalytic reductionMn-based catalystcatalytic performance |
| spellingShingle | Yuming Yang Xue Bian Feng Xie Yuting Bai Jing Wang Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts Applied Sciences nitrogen oxide selective catalytic reduction Mn-based catalyst catalytic performance |
| title | Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts |
| title_full | Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts |
| title_fullStr | Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts |
| title_full_unstemmed | Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts |
| title_short | Research Progress in the Composition and Performance of Mn-Based Low-Temperature Selective Catalytic Reduction Catalysts |
| title_sort | research progress in the composition and performance of mn based low temperature selective catalytic reduction catalysts |
| topic | nitrogen oxide selective catalytic reduction Mn-based catalyst catalytic performance |
| url | https://www.mdpi.com/2076-3417/14/22/10198 |
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