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Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation
Li Weiman1,2,3,4; Liu Haidi1; Zhang Min1,2; Chen Yunfa1,4
2019-09-30
Source PublicationRSC ADVANCES
Volume9Issue:53Pages:31035-31042
AbstractIn this work, a series of mesoporous NixMn6-xCe ternary oxides were prepared to investigate their NO catalytic oxidation ability. The sample Ni2Mn4Ce4 showed a 95% NO conversion at 210 degrees C (GHSV, similar to 80 000 h(-1)). Characterization results showed the good catalytic performance of Ni2Mn4Ce4 was due to its high specific surface area, more surface oxygen and high valance manganese species, which can be ascribed to the incorporation of three elements. Based on the results of XRD, H-2-TPR, O-2-TPD and XPS, we confirmed the existence of Ni3+ + Mn3+ -> Ni2+ + Mn4+, Ce4+ + Ni2+ -> Ce3+ + Ni3+ in Ni2Mn4Ce4, and the oxidation-reduction cycles were proved to be helpful for NO oxidation. The results from an in situ DRIFTS study indicated the presence of bidentate nitrate and monodentate nitrate species on the catalyst's surface. The nitrate species were proved to be intermediates for NO oxidation to NO2. A nitrogen circle mechanism was proposed to explain the possible route for NO oxidation. Nickel introduction was also helpful to improve the SO2 resistance of the NO oxidation reaction. The activity drop of Ni2Mn4Ce4 was 13.15% in the presence of SO2, better than Mn6Ce4 (25.29%).
DOI10.1039/c9ra05098a
Language英语
WOS KeywordLOW-TEMPERATURE SCR ; IN-SITU DRIFTS ; HIGHLY EFFICIENT ; CO OXIDATION ; REDUCTION ; MECHANISM ; PERFORMANCE ; MNOX-CEO2 ; AMMONIA ; FACILE
Funding ProjectNational Key Research and Development Plan[2016YFC0204100] ; National Key Research and Development Plan[2016YFC0204103] ; Control Strategy and Technology Integrated Demonstration of Industrial Source Pollution in Guanzhong area of China[ZDRW-ZS-2017-6-2]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Key Research and Development Plan ; Control Strategy and Technology Integrated Demonstration of Industrial Source Pollution in Guanzhong area of China
WOS IDWOS:000489652900050
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/31088
Collection中国科学院过程工程研究所
Corresponding AuthorChen Yunfa
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Zhongke Langfang Inst Proc Engn, Langfang Econ Tech Dev Zone, Fenghua Rd 1, Zhongke, Hebei, Peoples R China
4.CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Li Weiman,Liu Haidi,Zhang Min,et al. Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation[J]. RSC ADVANCES,2019,9(53):31035-31042.
APA Li Weiman,Liu Haidi,Zhang Min,&Chen Yunfa.(2019).Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation.RSC ADVANCES,9(53),31035-31042.
MLA Li Weiman,et al."Comparative study of mesoporous NixMn6-xCe4 composite oxides for NO catalytic oxidation".RSC ADVANCES 9.53(2019):31035-31042.
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