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Catalytic Degradation of Benzene over Nanocatalysts containing Cerium and Manganese
Wang, Zhen1; Deng, Yuzhou2,3; Shen, Genli1; Akram, Sadia1,3; Han, Ning2; Chen, Yunfa2; Wang, Qi1
2016-10-01
Source PublicationCHEMISTRYOPEN
ISSN2191-1363
Volume5Issue:5Pages:495-504
Abstract

A Ce-Mn composite oxide possessing a rod-like morphology (with a fixed molar ratio of Ce/Mn=3:7) was synthesized through a hydrothermal method. Mn ions were doped into a CeO2 framework to replace Ce ions, thereby increasing the concentration of oxygen vacancies. The formation energies of O vacancies for the Ce-Mn composite oxide were calculated by applying density functional theory (DFT). The data showed that it was easier to form an O vacancy in the composite. The catalytic behavior of the Ce-Mn composite oxide for benzene degradation was researched in detail, which exhibited a higher activity than the pure phases. Based on this, the Ce-Mn composite oxide was chosen as a supporter to load PdO nanoparticles. The activity was enhanced further compared with that of the supporter alone (for the supporter, the reaction rate R-214 degrees C=0.68x10 (4) molg(cat) (1) s (1) and apparent activation energy E-a=12.75 kJ mol(-1); for the supporting catalyst, R-214 degrees C=1.46 x 10(-4) mol g(cat)(-1) s(-1), E-a=10.91 kJmol(-1)). The corresponding catalytic mechanism was studied through in situ Raman and FTIR spectroscopy, which indicated that the process of benzene oxidation was related to different types of oxygen species existing at the surface of the catalysts.

KeywordBenzene Oxidation Ce-mn Composite Oxide Density Functional Calculations Oxygen Vacancies Pdo
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/open.201600047
Indexed BySCI
Language英语
WOS KeywordMIXED-OXIDE CATALYSTS ; OPERANDO RAMAN-SPECTROSCOPY ; CO OXIDATION ; LOW-TEMPERATURE ; OXYGEN VACANCIES ; COMPOSITE OXIDES ; CUO-CEO2 CATALYSTS ; NO REDUCTION ; FT-IR ; COMBUSTION
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(51402061) ; Control Frontier Technology of Major Pollutants Haze of CAS(XDB05050300) ; State Key Laboratory of Multiphase Complex Systems in IPE, CAS(MPCS-2015A-04 ; MPCS-2014-D-10)
WOS IDWOS:000386939900011
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21587
Collection多相复杂系统国家重点实验室
Affiliation1.CAS Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Zhen,Deng, Yuzhou,Shen, Genli,et al. Catalytic Degradation of Benzene over Nanocatalysts containing Cerium and Manganese[J]. CHEMISTRYOPEN,2016,5(5):495-504.
APA Wang, Zhen.,Deng, Yuzhou.,Shen, Genli.,Akram, Sadia.,Han, Ning.,...&Wang, Qi.(2016).Catalytic Degradation of Benzene over Nanocatalysts containing Cerium and Manganese.CHEMISTRYOPEN,5(5),495-504.
MLA Wang, Zhen,et al."Catalytic Degradation of Benzene over Nanocatalysts containing Cerium and Manganese".CHEMISTRYOPEN 5.5(2016):495-504.
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