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Catalytic self-sustained combustion of toluene and reaction pathway over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts
Zhao CC; Hao QL; Zhang Q; Yan NN; Liu JR; Dou BJ; Bin F(宾峰)
Source PublicationAPPLIED CATALYSIS A-GENERAL
2019-01-05
Volume569Pages:66-74
ISSN0926-860X
AbstractThe catalytic self-sustained combustion of toluene over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts (x = 1, 0.5, 0) was studied in a microscale combustor. The catalytic activity is determined not only by the temperature with toluene conversion of 90% (T-co It was found that the self-sustained combustion was achieved successfully over the catalysts, with the toluene concentrations of 0.35 con.%, 0.50 con.% and 1.00 con.%. According to T-co,T- the activity decreased in the order of CuCe0.75Zr0.25/TiO2 (234 degrees C) > Cu0.5Mn0.5Ce0.75Zr0.25/TiO2 (238 degrees C) > MnCe0.75Zr0.25/TiO2 (284 degrees C). The excellent activity of CuCe0.75Zr0.25/TiO2 catalyst could be ascribed to the high content of active lattice oxygen, good low-temperature reducibility and homogeneous dispersion, combined with the results of H-2-TPR, O-2-TPD and XPS. Furthermore, the results of in-situ DRIFT and temperature-programmed oxidation (TPO) of toluene in N-2 atmosphere suggested that toluene was adsorbed on the catalyst surface by removing alpha-H from methyl and combining with active oxygen specie to form benzyl group, which was finally oxidized into CO2 and H2O with lattice oxygen.
KeywordToluene Self-sustained combustion Ce-Zr based catalyst Lean-combustion limit Reaction pathway
DOI10.1016/j.apcata.2018.10.034
Indexed BySCI ; EI
Language英语
WOS IDWOS:000451493400008
WOS KeywordSELECTIVE OXIDATION ; EFFICIENT CATALYST ; LATTICE OXYGEN ; CO OXIDATION ; PERFORMANCE ; DRIFTS
WOS Research AreaChemistry, Physical ; Environmental Sciences
WOS SubjectChemistry ; Environmental Sciences & Ecology
Funding OrganizationNational Nature Science Foundation of China [51776216] ; Research Centre of Modern Analytic Technology in Tianjin University of Science Technology
Classification一类
Ranking5+
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78482
Collection高温气体动力学国家重点实验室
Affiliation1.{Zhao, Chenchen、Hao, Qinglan、Zhang, Qing、Yan, Ningna、Liu, Jiaren、Dou, Baojuan} Tianjin Univ Sci & Technol, Tianjin 300457, Peoples R China
2.{Bin, Feng} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao CC,Hao QL,Zhang Q,et al. Catalytic self-sustained combustion of toluene and reaction pathway over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts[J]. APPLIED CATALYSIS A-GENERAL,2019,569:66-74.
APA Zhao CC.,Hao QL.,Zhang Q.,Yan NN.,Liu JR.,...&宾峰.(2019).Catalytic self-sustained combustion of toluene and reaction pathway over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts.APPLIED CATALYSIS A-GENERAL,569,66-74.
MLA Zhao CC,et al."Catalytic self-sustained combustion of toluene and reaction pathway over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts".APPLIED CATALYSIS A-GENERAL 569(2019):66-74.
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