| NO_x storage and reduction assisted by non-thermal plasma over Co/Pt/Ba/γ-Al_2O_3 catalyst using CH_4 as reductant |
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| 作者姓名： | Tao ZHU Xing ZHANG Nengjing YI Haibing LIU Zhenguo LI |
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| 作者单位： | Institute of Atmospheric Environmental Management and Pollution Control,China University of Mining& Technology(Beijing),Beijing 100083,People's Republic of China;State Key Laboratory of Organic Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,People's Republic of China;Institute of Atmospheric Environmental Management and Pollution Control,China University of Mining& Technology(Beijing),Beijing 100083,People's Republic of China;Solid Waste and Chemicals Management Technology Center,China Ministry of Ecology and Environment,Beijing 100029,People's Republic of China;National Engineering Laboratory for Mobile Source Emission Control Technology,China Automotive Technology & Research Center Co.,Ltd.,Tianjin 300300,People's Republic of China |
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| 基金项目： | This work was supported by the National Engineering
Laboratory for Mobile Source Emission Control Technology
(No. NELMS2019A13), the National Key Research and
Development Project of China (No. 2019YFC1805505), the
Shanxi Province Bidding Project (No. 20191101007), the
Major Science and Technology Projects of Shanxi Province
(No. 20181102017), and State Key Laboratory of Organic
Geochemistry (No. SKLOG -201909). |
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| 摘 要： | N_Ox storage and reduction(NSR) technology has been regarded as one of the most promising strategies for the removal of nitric oxides(NO_x) from lean-burn engines, and the potential of the plasma catalysis method for NO_x reduction has been confirmed in the past few decades. This work reports the NSR of nitric oxide(NO) by combining non-thermal plasma(NTP) and Co/Pt/Ba/γ-Al_2O_3(Co/PBA) catalyst using methane as a reductant. The experimental results reveal that the NO_x conversion of NSR assisted by NTP is notably enhanced compared to the catalytic efficiency obtained from NSR in the range of 150 °C–350 °C, and NO_x conversion of the 8% Co/PBA catalyst reaches 96.8% at 350°C. Oxygen(O_2) has a significant effect on the removal of NO_x, and the NO_x conversion increases firstly and then decreases when the O_2 concentration ranges from 2% to 10%. Water vapor reduces the NO_x storage capacity of Co/PBA catalysts on account of the competition for adsorption sites on the surface of Co/PBA catalysts. There is a negative correlation between sulfur dioxide(SO_2) and NO_x conversion in the NTP system, and the 8% Co/PBA catalyst exhibits higher NO_x conversion compared to other catalysts, which shows that Co has a certain SO_2 resistance.
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| 收稿时间： | 2020-10-12 |
| 修稿时间： | 2020-12-21 |
NOx storage and reduction assisted by non-thermal plasma over Co/Pt/Ba/γ-Al2O3 catalyst using CH4 as reductant |
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| Tao ZHU,Xing ZHANG,Nengjing YI,Haibing LIU,Zhenguo LI.NOx storage and reduction assisted by non-thermal plasma over Co/Pt/Ba/γ-Al2O3 catalyst using CH4 as reductant[J].Plasma Science & Technology,2021,23(2):25506-84. |
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| Authors: | Tao ZHU Xing ZHANG Nengjing YI Haibing LIU Zhenguo LI |
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| Abstract: | NOx storage and reduction(NSR)technology has been regarded as one of the most promising strategies for the removal of nitric oxides(NOx)from lean-burn engines,and the potential of the plasma catalysis method for NOx reduction has been confirmed in the past few decades.This work reports the NSR of nitric oxide(NO)by combining non-thermal plasma(NTP)and Co/Pt/Ba/γ-Al2O3(Co/PBA)catalyst using methane as a reductant.The experimental results reveal that the NOx conversion of NSR assisted by NTP is notably enhanced compared to the catalytic efficiency obtained from NSR in the range of 150 ℃-350 ℃,and NOx conversion of the 8％Co/PBA catalyst reaches 96.8％at 350℃.Oxygen(O2)has a significant effect on the removal of NOx,and the NOx conversion increases firstly and then decreases when the O2 concentration ranges from 2％to 10％.Water vapor reduces the NOx storage capacity of Co/PBA catalysts on account of the competition for adsorption sites on the surface of Co/PBA catalysts.There is a negative correlation between sulfur dioxide(SO2)and NOx conversion in the NTP system,and the 8％Co/PBA catalyst exhibits higher NOx conversion compared to other catalysts,which shows that Co has a certain SO2 resistance. |
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| Keywords: | non-thermal plasma NOx storage and reduction Co/Pt/Ba/γ-Al2O3 catalyst NOx conversion influence parameter |
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