ICCAS OpenIR
Mechanism of Selective Catalytic Reduction of NOx with NH3 over CeO2-WO3 Catalysts
Chen Liang1,2; Li Junhua1,3; Ge Maofa2; Ma Lei1; Chang Huazhen1
2011-05-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume32Issue:5Pages:836-841
AbstractThe mechanism of NH3-selective catalytic reduction (SCR) over a CeO2-WO3 catalyst was investigated by temperature-programmed desorption (TPD) analysis and in situ diffuse reflectance infrared Fourier transform spectroscopy. The active sites were on CeO2, while WO3 greatly enhanced the amount and strength of the surface Bronsted acid sites and the NO oxidation ability. Both NH4+ and coordinated NH3 contributed to the SCR reaction. Bridging nitrate and monodentate nitrate were confirmed as the reactive nitrate species. Under SCR reaction conditions, surface NH4NO3 was formed, which played the role of an important intermediate species. Two different pathways for the SCR reaction were suggested for the CeO2-WO3 catalyst.
KeywordNitrogen Oxide Removal Selective Catalytic Reduction Activity Nitrogen Oxide Oxidation Ability Mechanism
DOI10.1016/S1872-2067(10)60195-7
Indexed BySCI ; ISTP
Language英语
WOS IDWOS:000291508200021
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73190
Collection中国科学院化学研究所
Corresponding AuthorLi Junhua
Affiliation1.Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China
3.Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Chen Liang,Li Junhua,Ge Maofa,et al. Mechanism of Selective Catalytic Reduction of NOx with NH3 over CeO2-WO3 Catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2011,32(5):836-841.
APA Chen Liang,Li Junhua,Ge Maofa,Ma Lei,&Chang Huazhen.(2011).Mechanism of Selective Catalytic Reduction of NOx with NH3 over CeO2-WO3 Catalysts.CHINESE JOURNAL OF CATALYSIS,32(5),836-841.
MLA Chen Liang,et al."Mechanism of Selective Catalytic Reduction of NOx with NH3 over CeO2-WO3 Catalysts".CHINESE JOURNAL OF CATALYSIS 32.5(2011):836-841.
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