The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode
文献类型：期刊论文
| 作者 | Zhang, J ; Hu, TD; Ding, T; Tian, Y; Yang, YX; Xing, LL; Cao, CM; Zheng LR(郑黎荣); Hu TD(胡天斗); Zhang J(张静)
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| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2017 |
| 卷号 | 406页码:245-253 |
| 关键词 | Transition metal oxides Nanosheets Three-dimensionally macroporous Ni foam Soot combustion Crossed macropores |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2017.02.117 |
| 文献子类 | Article |
| 英文摘要 | Crossed nanosheets of transition metal oxide (TMO-NS: Co-NS, Mn-NS and Fe-NS) were synthesized by a facile hydrothermal method and employed for soot combustion in the NO/O-2/N-2 and O-2/N-2 atmosphere under gravitational contact mode (GCM). They show high catalytic activities for soot combustion due to the macroporous structure of the as-prepare catalysts increasing the soot-catalyst contact efficiency. The XRD and XPS results reveal that the active phases in the corresponding catalysts exist as Co3O4, Mn2O3 and Fe2O3, respectively. Among these catalysts, the Co-NS shows the best activity for soot combustion, especially in the presence of NO, whose catalytic activity of T-50 (391 degrees C) and S-CO2 (100%) is as good as that of the Pt/Al2O3 catalyst. The excellent performance of the Co-NS catalyst results from several factors: the highest intrinsic activity (TOF = 1.77 x 10(-5) s(-1)); the highest redox property as revealed by H-2-TPR and soot-TPR; the largest amount of active oxygen species as clarified by XPS; the highest ability of NO oxidation to NO2 supported by NO-TPO. In addition, the multiporous structure of Co3O4 nanosheets is facilitated for the mass transfer. In the O-2 atmosphere, soot particulates are directly oxidized by the surface adsorbed oxygen. After introducing of NO, the soot particulates are readily oxidized by NO2 at the low temperature (< 330 degrees C); with the increase of the reaction temperature (330-450 degrees C), both the active oxygen species and NO2 involve in soot combustion. (C) 2017 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1873-5584 |
| WOS关键词 | CARBON-MONOXIDE OXIDATION ; CATALYTIC PERFORMANCE ; ARRAY CATALYST ; NOX STORAGE ; GOLD NANOPARTICLES ; NANOPOROUS WALLS ; CEO2 NANOCUBES ; ORGANIC-DYES ; REMOVAL ; PEROVSKITE |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000398011600031 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284729]  |
| 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 |
| 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 | Zhang, J,Hu, TD,Ding, T,et al. The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode[J]. APPLIED SURFACE SCIENCE,2017,406:245-253. |
| APA | Zhang, J.,Hu, TD.,Ding, T.,Tian, Y.,Yang, YX.,...&Zheng, LR.(2017).The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode.APPLIED SURFACE SCIENCE,406,245-253. |
| MLA | Zhang, J,et al."The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode".APPLIED SURFACE SCIENCE 406(2017):245-253. |
入库方式： OAI收割
来源：高能物理研究所
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