Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal
文献类型：期刊论文
| ; | |
| 作者 | Li, ZQ; Meng, M; Dai, FF; Hu, TD; Xie, YN; Zhang, J;胡天斗; Xie YN(谢亚宁) ; Zhang J(张静)
|
| 刊名 | FUEL
 ; FUEL
|
| 出版日期 | 2012 ; 2012 |
| 卷号 | 93期号:1页码:606-610 |
| 关键词 | Soot combustion NOx storage and reduction Perovskite K Ni Soot combustion NOx storage and reduction Perovskite K Ni |
| DOI | 10.1016/j.fuel.2011.10.040 |
| 英文摘要 | The nanometric substituted perovskite catalysts La1-xKxCo1-yNiyO3-delta (x = 0, 0.1; y = 0, 0.05, 0.1) were synthesized by citric acid complexation method, and employed for soot combustion, NOx storage and simultaneous NOx-soot removal. Their structures and physico-chemical properties were characterized by XRD, EXAFS, BET, SEM, H-2-TPR, and XPS techniques. When K and Ni are simultaneously introduced into LaCoO3 catalyst, soot combustion is largely accelerated, with the temperature (T-m) for maximal soot conversion lowered by at least 50 degrees C; moreover, NOx reduction by soot is also facilitated. The La0.9K0.1Co0.95Ni0.05O3-delta catalyst exhibits not only the lowest T-m (367 degrees C) temperature but also the highest soot combustion rate (67.3 mu g/s g catalyst). Meanwhile, the NOx reduction percentage over this catalyst can reach 21%. The kinetic results show that the activation energy for soot combustion over La0.9K0.1Co0.95Ni0.05O3-delta (81.34 kJ mol(-1)) is much lower than that over LaCoO3 (107.7 kJ mol(-1)). The H-2-TPR and XPS results show that the La0.9K0.1Co0.95Ni0.05O3-delta catalyst possesses better redox properties, more tetravalent cobalt ions and larger amount of surface adsorbed oxygen species, which determines its novel performance for soot combustion, NOx storage and soot-NOx removal. (C) 2011 Elsevier Ltd. All rights reserved.; The nanometric substituted perovskite catalysts La1-xKxCo1-yNiyO3-delta (x = 0, 0.1; y = 0, 0.05, 0.1) were synthesized by citric acid complexation method, and employed for soot combustion, NOx storage and simultaneous NOx-soot removal. Their structures and physico-chemical properties were characterized by XRD, EXAFS, BET, SEM, H-2-TPR, and XPS techniques. When K and Ni are simultaneously introduced into LaCoO3 catalyst, soot combustion is largely accelerated, with the temperature (T-m) for maximal soot conversion lowered by at least 50 degrees C; moreover, NOx reduction by soot is also facilitated. The La0.9K0.1Co0.95Ni0.05O3-delta catalyst exhibits not only the lowest T-m (367 degrees C) temperature but also the highest soot combustion rate (67.3 mu g/s g catalyst). Meanwhile, the NOx reduction percentage over this catalyst can reach 21%. The kinetic results show that the activation energy for soot combustion over La0.9K0.1Co0.95Ni0.05O3-delta (81.34 kJ mol(-1)) is much lower than that over LaCoO3 (107.7 kJ mol(-1)). The H-2-TPR and XPS results show that the La0.9K0.1Co0.95Ni0.05O3-delta catalyst possesses better redox properties, more tetravalent cobalt ions and larger amount of surface adsorbed oxygen species, which determines its novel performance for soot combustion, NOx storage and soot-NOx removal. (C) 2011 Elsevier Ltd. All rights reserved. |
| 学科主题 | Energy & Fuels; Engineering ; Energy & Fuels; Engineering |
| 收录类别 | SCI |
| WOS记录号 | WOS:000299541400074 ; WOS:000299541400074 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224023]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Li, ZQ,Meng, M,Dai, FF,et al. Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal, Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal[J]. FUEL, FUEL,2012, 2012,93, 93(1):606-610, 606-610. |
| APA | Li, ZQ.,Meng, M.,Dai, FF.,Hu, TD.,Xie, YN.,...&张静.(2012).Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal.FUEL,93(1),606-610. |
| MLA | Li, ZQ,et al."Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal".FUEL 93.1(2012):606-610. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。