Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance
Abstract The soot emitted during the operation of diesel engine exhaust seriously threatens the human health and environment, so treating diesel engine exhaust is critical. At present, the most effective method for eliminating soot particles is post‐treatment technology. Preparation of economically...
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Smart Molecules |
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| Online Access: | https://doi.org/10.1002/smo.20240022 |
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| author | Chunlei Zhang Siyu Gao Xinyu Chen Di Yu Lanyi Wang Xiaoqiang Fan Ying Cheng Xuehua Yu Zhen Zhao |
| author_facet | Chunlei Zhang Siyu Gao Xinyu Chen Di Yu Lanyi Wang Xiaoqiang Fan Ying Cheng Xuehua Yu Zhen Zhao |
| author_sort | Chunlei Zhang |
| collection | DOAJ |
| description | Abstract The soot emitted during the operation of diesel engine exhaust seriously threatens the human health and environment, so treating diesel engine exhaust is critical. At present, the most effective method for eliminating soot particles is post‐treatment technology. Preparation of economically viable and highly active soot combustion catalysts is a pivotal element of post‐treatment technology. In this study, different single‐metal oxide catalysts with fibrous structures and alkali metal‐modified hollow nanotubular Mn‐based oxide catalysts were synthesized using centrifugal spinning method. Activity evaluation results showed that the manganese oxide catalyst has the best catalytic activity among the prepared single‐metal oxide catalysts. Further research on alkali metal modification showed that doping alkali metals is beneficial for improving the oxidation state of manganese and generating a large number of reactive oxygen species. Combined with the structural effect brought by the hollow nanotube structure, the alkali metal‐modified Mn‐based oxide catalysts exhibit superior catalytic performance. Among them, the Cs‐modified Mn‐based oxide catalyst exhibits the best catalytic performance because of its rich active oxygen species, excellent NO oxidation ability, abundant Mn4+ ions (Mn4+/Mnn+ = 64.78%), and good redox ability. The T10, T50, T90, and CO2 selectivity of the Cs‐modified Mn‐based oxide catalyst were 267°C, 324°C, 360°C, and 97.8%, respectively. |
| format | Article |
| id | doaj-art-91bc8c4df95b45b7893ef88e67352801 |
| institution | Kabale University |
| issn | 2751-4587 2751-4595 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Smart Molecules |
| spelling | doaj-art-91bc8c4df95b45b7893ef88e673528012025-08-20T03:41:15ZengWileySmart Molecules2751-45872751-45952025-03-0131n/an/a10.1002/smo.20240022Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performanceChunlei Zhang0Siyu Gao1Xinyu Chen2Di Yu3Lanyi Wang4Xiaoqiang Fan5Ying Cheng6Xuehua Yu7Zhen Zhao8State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing ChinaInstitute of Catalysis for Energy and Environment College of Chemistry and Chemical Engineering Shenyang Normal University Shenyang Liaoning ChinaInstitute of Catalysis for Energy and Environment College of Chemistry and Chemical Engineering Shenyang Normal University Shenyang Liaoning ChinaState Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing ChinaInstitute of Catalysis for Energy and Environment College of Chemistry and Chemical Engineering Shenyang Normal University Shenyang Liaoning ChinaInstitute of Catalysis for Energy and Environment College of Chemistry and Chemical Engineering Shenyang Normal University Shenyang Liaoning ChinaDepartment of Environmental Engineering Hebei University of Environmental Engineering Qinhuangdao Hebei ChinaInstitute of Catalysis for Energy and Environment College of Chemistry and Chemical Engineering Shenyang Normal University Shenyang Liaoning ChinaState Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing ChinaAbstract The soot emitted during the operation of diesel engine exhaust seriously threatens the human health and environment, so treating diesel engine exhaust is critical. At present, the most effective method for eliminating soot particles is post‐treatment technology. Preparation of economically viable and highly active soot combustion catalysts is a pivotal element of post‐treatment technology. In this study, different single‐metal oxide catalysts with fibrous structures and alkali metal‐modified hollow nanotubular Mn‐based oxide catalysts were synthesized using centrifugal spinning method. Activity evaluation results showed that the manganese oxide catalyst has the best catalytic activity among the prepared single‐metal oxide catalysts. Further research on alkali metal modification showed that doping alkali metals is beneficial for improving the oxidation state of manganese and generating a large number of reactive oxygen species. Combined with the structural effect brought by the hollow nanotube structure, the alkali metal‐modified Mn‐based oxide catalysts exhibit superior catalytic performance. Among them, the Cs‐modified Mn‐based oxide catalyst exhibits the best catalytic performance because of its rich active oxygen species, excellent NO oxidation ability, abundant Mn4+ ions (Mn4+/Mnn+ = 64.78%), and good redox ability. The T10, T50, T90, and CO2 selectivity of the Cs‐modified Mn‐based oxide catalyst were 267°C, 324°C, 360°C, and 97.8%, respectively.https://doi.org/10.1002/smo.20240022alkali metalcatalystcentrifugal spinningMn‐based oxidessoot combustion |
| spellingShingle | Chunlei Zhang Siyu Gao Xinyu Chen Di Yu Lanyi Wang Xiaoqiang Fan Ying Cheng Xuehua Yu Zhen Zhao Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance Smart Molecules alkali metal catalyst centrifugal spinning Mn‐based oxides soot combustion |
| title | Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance |
| title_full | Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance |
| title_fullStr | Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance |
| title_full_unstemmed | Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance |
| title_short | Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance |
| title_sort | facile preparation of alkali metal modified hollow nanotubular manganese based oxide catalysts and their excellent catalytic soot combustion performance |
| topic | alkali metal catalyst centrifugal spinning Mn‐based oxides soot combustion |
| url | https://doi.org/10.1002/smo.20240022 |
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