CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion
Liu, DS; Guo, X; Meng, M; Zhang, YX; Jiang, Z; 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.
2015
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume135Pages:421—430
Subtype期刊文献
AbstractThe 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.
KeywordNox Storage Diesel Soot Selective Hydrogenation Noble-metals Oxidation Removal Reduction Co Deactivation Performance
Indexed BySCI
Language英语
WOS IDWOS:000363036100041
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24857
Collection中科院上海应用物理研究所2011-2020年
Corresponding AuthorMeng, 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.
Recommended Citation
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,&Meng, M .(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.
Files in This Item: Download All
File Name/Size DocType Version Access License
A study on the catal(1902KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, DS]'s Articles
[Guo, X]'s Articles
[Meng, M]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, DS]'s Articles
[Guo, X]'s Articles
[Meng, M]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, DS]'s Articles
[Guo, X]'s Articles
[Meng, M]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A study on the catalytic synergism between K and Pd in Co3Al(O) hydrotalcite-derived oxide catalysts used for soot combustion.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.