A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion
文献类型：期刊论文
| 作者 | Liu, DS; Guo, X; Meng, M; Zhang, YX; Jiang, Z |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2015 |
| 卷号 | 135页码:421—430 |
| 关键词 | NOX STORAGE DIESEL SOOT SELECTIVE HYDROGENATION NOBLE-METALS OXIDATION REMOVAL REDUCTION CO DEACTIVATION PERFORMANCE |
| ISSN号 | 0009-2509 |
| 通讯作者 | Meng, M (reprint author), Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin Key Lab Appl Catalysis Sci & Engn, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China. |
| 英文摘要 | The K/Co3-xPdxAl(O) (x=0 or 0.02) and K/Pd/Co3Al(O) catalysts promoted by K and Pd were synthesized by using pH constant co-precipitation and successive impregnation methods through the precursors of hydrotalcites. The physicochemical properties of these catalysts were systematically characterized by XRD, EXAFS, XANES, XPS, HRTEM, H-2-TPR, soot-TPR and in situ FT-IR. It is found that the catalyst K/Pd/Co3Al(O) prepared by successive impregnation displays the lowest characteristic temperatures including the initial and final combustion temperatures (T-i and T-f). The coexistence of K and Pd in K/Pd/Co3Al(O) or K/Co3-xPdxAl(O) can improve both the reducibility and the oxidizabilily of the catalysts, generating a prominent catalytic synergism on soot oxidation. K-Co-O and K-Pd-O have been identified as the main active phases in the catalysts simultaneously promoted by K and Pd. Based on the results of in-situ FT-IR three potential reaction pathways for soot combustion have been revealed, namely the direct soot oxidation, nitrate enhanced soot oxidation and NO2-assisted soot oxidation. As compared with the conventional Pd/Al2O3 catalyst, the as-prepared K/Pd/Co3Al(O) catalyst possesses much higher thermal stability. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000363036100041 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24857]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Liu, DS,Guo, X,Meng, M,et al. A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion[J]. CHEMICAL ENGINEERING SCIENCE,2015,135:421—430. |
| APA | Liu, DS,Guo, X,Meng, M,Zhang, YX,&Jiang, Z.(2015).A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion.CHEMICAL ENGINEERING SCIENCE,135,421—430. |
| MLA | Liu, DS,et al."A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion".CHEMICAL ENGINEERING SCIENCE 135(2015):421—430. |
入库方式： OAI收割
来源：上海应用物理研究所
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