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The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode
Cao, CM; Xing, LL; Yang, YX; Tian, Y; Ding, T; Zhang, J; Hu, TD; Zheng, LR; Li, XG; Zhang J(张静); Hu TD(胡天斗); Zheng LR(郑黎荣)
2017
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
EISSN1873-5584
Volume406Pages:245-253
SubtypeArticle
AbstractCrossed 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.
KeywordTransition metal oxides Nanosheets Three-dimensionally macroporous Ni foam Soot combustion Crossed macropores
DOI10.1016/j.apsusc.2017.02.117
WOS KeywordCARBON-MONOXIDE OXIDATION ; CATALYTIC PERFORMANCE ; ARRAY CATALYST ; NOX STORAGE ; GOLD NANOPARTICLES ; NANOPOROUS WALLS ; CEO2 NANOCUBES ; ORGANIC-DYES ; REMOVAL ; PEROVSKITE
Indexed BySCI ; EI ; SCOPUS ; ADS
Language英语
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000398011600031
EI Accession Number20170903397395
EI KeywordsAluminum compounds - Combustion - Dust - Hematite - Ionization of gases - Manganese oxide - Mass transfer - Nanosheets - Nitrogen oxides - Oxidation - Oxygen - Platinum compounds - Soot - Temperature - Transition metal oxides - Transition metals - X ray photoelectron spectroscopy
EI Classification Number451.1 Air Pollution Sources - 482.2 Minerals - 531 Metallurgy and Metallography - 641.1 Thermodynamics - 641.3 Mass Transfer - 761 Nanotechnology - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 933 Solid State Physics
ADS Bibcode2017ApSS..406..245C
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017ApSS..406..245C
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017ApSS..406..245C/citations
Citation statistics
Cited Times:4 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284729
Collection多学科研究中心
实验物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Cao, CM,Xing, LL,Yang, YX,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 Cao, CM.,Xing, LL.,Yang, YX.,Tian, Y.,Ding, T.,...&郑黎荣.(2017).The monolithic transition metal oxide crossed nanosheets used for diesel soot combustion under gravitational contact mode.APPLIED SURFACE SCIENCE,406,245-253.
MLA Cao, CM,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.
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