Performance of K-promoted hydrotalcite-derived CoMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal
文献类型：期刊论文
| 作者 | Li, Q; Meng, M ; Tsubaki, N; Li, XG; Li, ZQ; Xie, YN; Hu, TD; Zhang, J; Xie YN(谢亚宁); Hu TD(胡天斗)
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| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
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| 出版日期 | 2009 |
| 卷号 | 91期号:1-2页码:406-415 |
| 关键词 | Soot NOx Hydrotalcite-derived CoMgAlO catalysts Potassium Calcination temperature |
| 通讯作者 | [Li, Qian ; Meng, Ming ; Li, Xingang ; Li, Zhaoqiang] Tianjin Univ, Tianjin Key Lab Appl Catalysis Sci & Engn, Dept Catalysis Sci &Technol, Sch Chem Engn &Technol, Tianjin 300072, Peoples R China ; [Tsubaki, Noritatsu] Toyama Univ, Dept Appl Chem, Sch Engn, Toyama 9308555, Japan ; [Xie, Yaning ; Hu, Tiandou ; Zhang, Jing] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 英文摘要 | A series of K-promoted hydrotalcite-derived CoMgAlO catalysts were synthesized by coprecipitation. Their catalytic performance for soot combustion, NOx storage and simultaneous soot-NOx removal was evaluated, respectively. The techniques of TG/DTA, BET, XRD, EXAFS, XPS and in situ DRIFTS were employed for catalyst characterization. When K is added to the catalyst CoMgAlO, soot combustion is largely accelerated, with the temperature (T(m)) for maximum soot conversion lowered by at least 50 degrees C. Moreover, the NOx reduction by soot over the catalysts calcined at 500-700 degrees C is also facilitated. The K-containing catalyst calcined at 600 degrees C shows not only the highest soot combustion rate, but also the maximum NOx reduction percentage of 32%, which is attributed to its high surface K/Co atomic ratio and the strong interaction between K and Co. In situ DRIFTS results reveal that NO is readily oxidized to NO(2) and stored as nitrates over K-promoted catalysts, which could be reduced by soot more efficiently. Based on these investigations, a reaction pathway for soot combustion, NOx storage and simultaneous soot-NOx removal is proposed. (C) 2009 Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry; Engineering |
| 类目[WOS] | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| 研究领域[WOS] | Chemistry ; Engineering |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000269374400049 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237346]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 高能物理研究所_东莞分部 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 |
| 推荐引用方式 GB/T 7714 | Li, Q,Meng, M,Tsubaki, N,et al. Performance of K-promoted hydrotalcite-derived CoMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2009,91(1-2):406-415. |
| APA | Li, Q.,Meng, M.,Tsubaki, N.,Li, XG.,Li, ZQ.,...&张静.(2009).Performance of K-promoted hydrotalcite-derived CoMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal.APPLIED CATALYSIS B-ENVIRONMENTAL,91(1-2),406-415. |
| MLA | Li, Q,et al."Performance of K-promoted hydrotalcite-derived CoMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal".APPLIED CATALYSIS B-ENVIRONMENTAL 91.1-2(2009):406-415. |
入库方式： OAI收割
来源：高能物理研究所
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