CAS OpenIR
Synergetic effect over flame-made manganese doped CuO-CeO2 nanocatalyst for enhanced CO oxidation performance
Zhao, Feng1,2; Li, Shuangde1; Wu, Xiaofeng1; Yue, Renliang1; Li, Weiman1,2; Chen, Yunfa1,3
2019-01-23
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume9Issue:5Pages:2343-2352
AbstractCuO-CeO2 nanocatalysts with different amounts of Mn dopping (Mn/Cu molar ratios of 0.5 : 5, 1 : 5 and 1.5 : 5) were synthesized by flame spray pyrolysis (FSP) method and tested in the catalytic oxidation of CO. The physicochemical properties of the synthesised samples were characterized systematically, including using X-ray diffraction (XRD), Raman spectroscopy, field-emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), oxygen-temperature programmed desorption (O-2-TPD), hydrogen-temperature programmed reduction (H-2-TPR) and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS). The results showed that the 1Mn-Cu-Ce sample (Mn/Cu molar ratio of 1 : 5) exhibited superior catalytic activity for CO oxidation, with the temperature of 90% CO oxidation at 131 degrees C at a high space velocity (SV = 60 000 mL g(-1) h(-1)), which was 56 degrees C lower than that of the Cu-Ce sample. In addition, the 1Mn-Cu-Ce sample displays excellent stability with prolonged time on CO stream and the resistance to water vapor. The significantly enhanced activity was correlated with strong synergetic effect, leading to fine textual properties, abundant chemically adsorbed oxygen and high lattice oxygen mobility, which further induced more Cu+ species and less formation of carbon intermediates during the CO oxidation process detected by in situ DRIFTS analysis. This work will provide in-depth understanding of the synergetic effect on CO oxidation performances over Mn doped CuO-CeO2 composite catalysts through FSP method.
DOI10.1039/c8ra09626k
Language英语
WOS KeywordPREFERENTIAL OXIDATION ; CATALYTIC PERFORMANCE ; SELECTIVE OXIDATION ; CARBON-MONOXIDE ; CALCINATION TEMPERATURE ; CUO-MNOX-CEO2 CATALYSTS ; OXIDE CATALYSTS ; MIXED OXIDES ; MN ; CERIA
Funding ProjectNational Key Research and Development Program of China[2016YFC0204903] ; National Key Research and Development Program of China[2016YFC0207100] ; National Natural Science Foundation of China[51672273]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS IDWOS:000457379300002
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27838
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Yunfa
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Feng,Li, Shuangde,Wu, Xiaofeng,et al. Synergetic effect over flame-made manganese doped CuO-CeO2 nanocatalyst for enhanced CO oxidation performance[J]. RSC ADVANCES,2019,9(5):2343-2352.
APA Zhao, Feng,Li, Shuangde,Wu, Xiaofeng,Yue, Renliang,Li, Weiman,&Chen, Yunfa.(2019).Synergetic effect over flame-made manganese doped CuO-CeO2 nanocatalyst for enhanced CO oxidation performance.RSC ADVANCES,9(5),2343-2352.
MLA Zhao, Feng,et al."Synergetic effect over flame-made manganese doped CuO-CeO2 nanocatalyst for enhanced CO oxidation performance".RSC ADVANCES 9.5(2019):2343-2352.
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