Hydrotalcite-Derived MnxMg3-xAlO Catalysts Used for Soot Combustion, NOx Storage and Simultaneous Soot-NOx Removal
Li, QA; Meng, M; Xian, H; Tsubaki, N; Li, XG; Xie, YN; Hu, TD; Zhang, J; Xie YN(谢亚宁); Hu TD(胡天斗); Zhang J(张静)
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
2010
卷号44期号:12页码:4747-4752
学科分类Engineering; Environmental Sciences & Ecology
DOI10.1021/es9033638
通讯作者[Li, Qian ; Meng, Ming ; Xian, Hui ; Li, Xingang] Tianjin Univ, Tianjin Key Lab Appl Catalysis Sci & Engn, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China ; [Tsubaki, Noritatsu] Toyama Univ, Sch Engn, Dept Appl Chem, Toyama 9308555, Japan ; [Xie, Yaning ; Hu, Tiandou ; Zhang, Jing] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
英文摘要The hydrotalcite-based MnxMg3AlO catalysts with different Mn: Mg atomic ratios were synthesized by coprecipitation, and employed for soot combustion, NOx storage and simultaneous soot-NOx removal. It is shown that with the increase of Mn content in the hydrotalcite-based MnxMg3-xAlO catalysts the major Mn-related species vary from MnAl2O4 and Mg2MnO4 to Mn3O4 and Mn2O3. The catalyst Mn1.5Mg1.5AlO displays the highest soot combustion activity with the temperature for maximal soot combustion rate decreased by 210 degrees C, as compared with the Mn-free catalyst The highly reducible Mn4+ ions in Mg2MnO4 are identified as the most active species for soot combustion. For NOx storage, introduction of Mn greatly influences bulk NOx storage, with the adsorbed NOx species varying from linear nitrites to ionic and chelating bidentate nitrates gradually. The coexistence of highly oxidative Mn4+ and highly reductive Mn2+ in Mn1.0Mg2.0AlO is favorable to the simultaneous soot-NOx removal, giving a NOx reduction percentage of 24%. In situ DRIFTS reveals that the ionic nitrate species are more reactive with soot than nitrites and chelating bidentate nitrates, showing higher NOx reduction efficiency.
类目[WOS]Engineering, Environmental ; Environmental Sciences
研究领域[WOS]Engineering ; Environmental Sciences & Ecology
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语种英语
WOS记录号WOS:000278617000060
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被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239996
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_实验物理中心
中国科学院高能物理研究所_多学科研究中心
中国科学院高能物理研究所_中国散裂中子源
作者单位中国科学院高能物理研究所
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Li, QA,Meng, M,Xian, H,et al. Hydrotalcite-Derived MnxMg3-xAlO Catalysts Used for Soot Combustion, NOx Storage and Simultaneous Soot-NOx Removal[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2010,44(12):4747-4752.
APA Li, QA.,Meng, M.,Xian, H.,Tsubaki, N.,Li, XG.,...&张静.(2010).Hydrotalcite-Derived MnxMg3-xAlO Catalysts Used for Soot Combustion, NOx Storage and Simultaneous Soot-NOx Removal.ENVIRONMENTAL SCIENCE & TECHNOLOGY,44(12),4747-4752.
MLA Li, QA,et al."Hydrotalcite-Derived MnxMg3-xAlO Catalysts Used for Soot Combustion, NOx Storage and Simultaneous Soot-NOx Removal".ENVIRONMENTAL SCIENCE & TECHNOLOGY 44.12(2010):4747-4752.
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