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NO reduction by CO over a Fe-based catalyst in FCC regenerator conditions
Alternative TitleChem. Eng. J.
Li, Jun1,2; Wang, Shan2; Zhou, Li2; Luo, Guohua1; Wei, Fei1
2014-11-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume255Issue:NOV.Pages:126-133
AbstractA newly route for reduction of NOx by CO in the presence of an oxidization catalyst was proposed. In this strategy, O-2 is first consumed by CO in the presence of oxidized catalyst, and then NO in the deoxidized flue gas is reduced by CO in the presence of reduced catalyst. The catalytic performance of a Fe-based catalyst as an oxidization catalyst for the reduction of NO by CO under typical FCC regeneration conditions was investigated. In comparison with the FCC catalyst, the Fe-based catalyst enhances a rapid consumption of O-2 and improves the reduction of NO by CO even at lower temperatures. A kinetics model was proposed to describe the effect of O-2 concentration on the reduction of NO by CO. The reaction rate constant k increased with the temperature but decreased with the increase of O-2 concentration. The CO NO reaction will not occur until the O-2 concentration is below a threshold value, which would be attributed to the stronger adsorption ability of O-2 than NO. This newly developed approach is efficient and might be extended to the reduction of NO derived from coal combustion plant by precisely controlling the O-2 concentration. (C) 2014 Elsevier B.V. All rights reserved.; A newly route for reduction of NOx by CO in the presence of an oxidization catalyst was proposed. In this strategy, O-2 is first consumed by CO in the presence of oxidized catalyst, and then NO in the deoxidized flue gas is reduced by CO in the presence of reduced catalyst. The catalytic performance of a Fe-based catalyst as an oxidization catalyst for the reduction of NO by CO under typical FCC regeneration conditions was investigated. In comparison with the FCC catalyst, the Fe-based catalyst enhances a rapid consumption of O-2 and improves the reduction of NO by CO even at lower temperatures. A kinetics model was proposed to describe the effect of O-2 concentration on the reduction of NO by CO. The reaction rate constant k increased with the temperature but decreased with the increase of O-2 concentration. The CO NO reaction will not occur until the O-2 concentration is below a threshold value, which would be attributed to the stronger adsorption ability of O-2 than NO. This newly developed approach is efficient and might be extended to the reduction of NO derived from coal combustion plant by precisely controlling the O-2 concentration. (C) 2014 Elsevier B.V. All rights reserved.
KeywordNo Reduction Fcc Regenerator Fe-based Catalyst
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2014.06.015
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXIDE CATALYST ; MIXED OXIDES ; ADDITIVES ; OXIDATION ; MECHANISM ; EMISSIONS ; REMOVAL ; UNIT ; SO2 ; HYDROCARBONS
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000341470800016
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11647
Collection研究所(批量导入)
Affiliation1.Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green React Engn & Technol, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun,Wang, Shan,Zhou, Li,et al. NO reduction by CO over a Fe-based catalyst in FCC regenerator conditions[J]. CHEMICAL ENGINEERING JOURNAL,2014,255(NOV.):126-133.
APA Li, Jun,Wang, Shan,Zhou, Li,Luo, Guohua,&Wei, Fei.(2014).NO reduction by CO over a Fe-based catalyst in FCC regenerator conditions.CHEMICAL ENGINEERING JOURNAL,255(NOV.),126-133.
MLA Li, Jun,et al."NO reduction by CO over a Fe-based catalyst in FCC regenerator conditions".CHEMICAL ENGINEERING JOURNAL 255.NOV.(2014):126-133.
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