| Surface reactive species on MnOx（0.4）-CeO2 catalysts towards soot oxidation assisted with pulse dielectric barrier discharge |
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| 作者姓名： | 付名利 林俊敏 朱文波 吴军良 陈礼敏 黄碧纯 叶代启 |
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| 作者单位： | [1]College of Environment and Energy, South China University of Technology, Guangzhou 510006, China [2]Guangdong Provincial Key Laboratory of Atmos-pheric Environment and Pollution Control, Guangzhou 510006, China [3]Guangdong High Education Engineering Technology Research Center for Air Pollu-tion Control, Guangzhou 5 10006, China [4]Key Lab of Ministry of Education for Pollution Control and Ecosystem Restoration in Industry Clusters, Guangzhou510006, China |
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| 基金项目： | Project supported by National Natural Science Foundation of China （51108187, 50978103, 21207039）, Guangdong High Education Engineering Technology Research Center for Air Pollution Control Program （GCZX-A0903）, and the Fundamental Research Funds for the Central Universities （2012ZM0041） |
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| 摘 要： | MnOx(0.4)-CeO2 was investigated for soot oxidation assisted with a pulse dielectric barrier discharge(DBD).The catalysts were evaluated and characterized with TPO(temperature programmed oxidation),X-ray diffraction(XRD),Raman and X-ray photoelectron spectroscopy(XPS).The ignition temperature Ti for soot oxidation decreased from 240.8 to 216.4 oC with the increase of the pulse DBD frequencies from 50 to 400 Hz,lower than that of the case without pulse DBD present(253.4 oC).The results of XRD,Raman and XPS agreed well with the TPO activities of MnOx(0.4)-CeO2 towards soot oxidation.More solid solution of ceria and manganese,and surface reactive species including O2–,O– and Mn4+ were responsible for the enhancement of soot oxidation due to pulse DBD injection in the present study.For solid solution favors to the activation and transformation of those species,which are believed to be involved in the soot oxidation in a hybrid catalysis-plasma.
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| 关 键 词： | 表面活性物质 介质阻挡放电 碳烟氧化 铈催化剂 氧化锰 脉冲 X-射线光电子能谱 程序升温氧化 |
| 收稿时间： | 2013-09-23 |
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