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Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot
Zhao, H.1,2; Zhou, X.X.1; Pan, L.Y.1,2; Wang, M.1,2; Chen, H.R.1,3; Shi, J.L.1,3
2017
Source PublicationRSC Advances
Volume7Issue:33Pages:20451-20459
AbstractA series of Cu-Mn mixed oxides were prepared via a facile co-precipitation method and used as catalysts for diesel soot combustion in NOx/O2/N2. It is found that the chemical composition in the Cu-Mn mixed oxides has a significant influence on both morphology and catalytic activity. When the Cu/Mn atomic ratio was optimized to be 1, a distinctive pure spinel phase of Cu1.5Mn1.5O4was obtained (named Cu1Mn1), which exhibited superior catalytic activity (e.g., finishing combustion temperature (Tf) = 360 °C, in loose contact mode). The excellent catalytic activity of Cu1Mn1 was mainly attributed to the following aspects: (1) distinct morphological features: the well-dispersed Cu1Mn1 microspheres with a rough surface could contact soot particles sufficiently, and the stacked pores between the loosely packed nanoparticles within the microspheres could facilitate the diffusion of gaseous O2, NO and NO2; and (2) the high intrinsic activity of the Cu1.5Mn1.5O4phase: the abundant adsorbed oxygen species (Oads) is beneficial to the direct oxidation of soot into CO2, and the enormous Cu+-Mnλ+(λ = 3, 4, hereinafter inclusive) cation pairs could facilitate the production of the strong oxidant NO2, and the interaction between Cu2+and NO2would lead to high enhancement efficiency of NO2for soot combustion. This facile strategy for the high activity spinel phase towards catalytic soot combustion shows great promise for practical applications. © The Royal Society of Chemistry.
DOI10.1039/c7ra01971h
EI Accession Number20171603579564
EI KeywordsCatalyst activity
EI Classification Number451.1 Air Pollution Sources - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25643
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, China
Recommended Citation
GB/T 7714
Zhao, H.,Zhou, X.X.,Pan, L.Y.,et al. Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot[J]. RSC Advances,2017,7(33):20451-20459.
APA Zhao, H.,Zhou, X.X.,Pan, L.Y.,Wang, M.,Chen, H.R.,&Shi, J.L..(2017).Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot.RSC Advances,7(33),20451-20459.
MLA Zhao, H.,et al."Facile synthesis of spinel Cu1.5Mn1.5O4microspheres with high activity for the catalytic combustion of diesel soot".RSC Advances 7.33(2017):20451-20459.
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