Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts
The plasma-catalytic oxidation of soot was studied over zeolite-supported vanadium catalysts, while four types of zeolites (MCM-41, mordenite, USY and 5A) were used as catalyst supports. The soot oxidation rate followed the order of V/MCM-41 > V/mordenite > V/USY > V/5A, while 100% soot oxi...
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MDPI AG
2022-06-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/7/677 |
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| author | Xinbo Zhu Hanpeng Wu Jianbin Luo Jin Liu Jiahao Yan Zijian Zhou Zhengda Yang Ye Jiang Geng Chen Guohua Yang |
| author_facet | Xinbo Zhu Hanpeng Wu Jianbin Luo Jin Liu Jiahao Yan Zijian Zhou Zhengda Yang Ye Jiang Geng Chen Guohua Yang |
| author_sort | Xinbo Zhu |
| collection | DOAJ |
| description | The plasma-catalytic oxidation of soot was studied over zeolite-supported vanadium catalysts, while four types of zeolites (MCM-41, mordenite, USY and 5A) were used as catalyst supports. The soot oxidation rate followed the order of V/MCM-41 > V/mordenite > V/USY > V/5A, while 100% soot oxidation was achieved at 54th min of reaction over V/MCM-41 and V/mordenite. The CO<sub>2</sub> selectivity of the process follows the opposite order of oxidation rate over the V/M catalyst. A wide range of catalyst characterizations including N<sub>2</sub> adsorption–desorption, XRD, XPS, H<sub>2</sub>-TPR and O<sub>2</sub>-TPD were performed to obtain insights regarding the reaction mechanisms of soot oxidation in plasma-catalytic systems. The redox properties were recognized to be crucial for the soot oxidation process. The effects of discharge power, gas flow rate and reaction temperature on soot oxidation were also investigated. The results showed that higher discharge power, higher gas flow rate and lower reaction temperature were beneficial for soot oxidation rate. However, these factors would impose a negative effect on CO<sub>2</sub> selectivity. The proposed “plasma-catalysis” method possessed the unique advantages of quick response, mild operation conditions and system compactness. The method could be potentially applied for the regeneration of diesel particulate filters (DPF) at low temperatures and contribute to the the emission control of diesel engines. |
| first_indexed | 2024-03-09T10:21:32Z |
| format | Article |
| id | doaj.art-bace25253258410f88df698e9cbd85e2 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T10:21:32Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-bace25253258410f88df698e9cbd85e22023-12-01T22:00:00ZengMDPI AGCatalysts2073-43442022-06-0112767710.3390/catal12070677Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium CatalystsXinbo Zhu0Hanpeng Wu1Jianbin Luo2Jin Liu3Jiahao Yan4Zijian Zhou5Zhengda Yang6Ye Jiang7Geng Chen8Guohua Yang9Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaState Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, ChinaCollege of New Energy, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, ChinaCollege of New Energy, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaThe plasma-catalytic oxidation of soot was studied over zeolite-supported vanadium catalysts, while four types of zeolites (MCM-41, mordenite, USY and 5A) were used as catalyst supports. The soot oxidation rate followed the order of V/MCM-41 > V/mordenite > V/USY > V/5A, while 100% soot oxidation was achieved at 54th min of reaction over V/MCM-41 and V/mordenite. The CO<sub>2</sub> selectivity of the process follows the opposite order of oxidation rate over the V/M catalyst. A wide range of catalyst characterizations including N<sub>2</sub> adsorption–desorption, XRD, XPS, H<sub>2</sub>-TPR and O<sub>2</sub>-TPD were performed to obtain insights regarding the reaction mechanisms of soot oxidation in plasma-catalytic systems. The redox properties were recognized to be crucial for the soot oxidation process. The effects of discharge power, gas flow rate and reaction temperature on soot oxidation were also investigated. The results showed that higher discharge power, higher gas flow rate and lower reaction temperature were beneficial for soot oxidation rate. However, these factors would impose a negative effect on CO<sub>2</sub> selectivity. The proposed “plasma-catalysis” method possessed the unique advantages of quick response, mild operation conditions and system compactness. The method could be potentially applied for the regeneration of diesel particulate filters (DPF) at low temperatures and contribute to the the emission control of diesel engines.https://www.mdpi.com/2073-4344/12/7/677plasmacatalysissoot oxidationzeolitevanadium |
| spellingShingle | Xinbo Zhu Hanpeng Wu Jianbin Luo Jin Liu Jiahao Yan Zijian Zhou Zhengda Yang Ye Jiang Geng Chen Guohua Yang Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts Catalysts plasma catalysis soot oxidation zeolite vanadium |
| title | Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts |
| title_full | Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts |
| title_fullStr | Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts |
| title_full_unstemmed | Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts |
| title_short | Soot Oxidation in a Plasma-Catalytic Reactor: A Case Study of Zeolite-Supported Vanadium Catalysts |
| title_sort | soot oxidation in a plasma catalytic reactor a case study of zeolite supported vanadium catalysts |
| topic | plasma catalysis soot oxidation zeolite vanadium |
| url | https://www.mdpi.com/2073-4344/12/7/677 |
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