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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
发表期刊CHEMISTRYOPEN
ISSN2191-1363
卷号5期号:5页码:495-504
摘要

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.

关键词Benzene Oxidation Ce-mn Composite Oxide Density Functional Calculations Oxygen Vacancies Pdo
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/open.201600047
收录类别SCI
语种英语
关键词[WOS]MIXED-OXIDE CATALYSTS ; OPERANDO RAMAN-SPECTROSCOPY ; CO OXIDATION ; LOW-TEMPERATURE ; OXYGEN VACANCIES ; COMPOSITE OXIDES ; CUO-CEO2 CATALYSTS ; NO REDUCTION ; FT-IR ; COMBUSTION
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
项目资助者National 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记录号WOS:000386939900011
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21587
专题多相复杂系统国家重点实验室
作者单位1.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
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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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