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Effect of surface carbon-oxygen complexes during NO reduction by coal char
Yan, Wenxia1,2; Li, Songgeng1,2; Fan, Chuigang1,2; Deng, Shuang3
Source PublicationFUEL

Eleven coal chars are studied in a laboratory scale fixed bed reactor using a simulated flue gas for NO reduction. XPS are applied to evaluate the distributions of different surface carbon-oxygen complexes on char surface and distinguish their roles in the reaction of NO with carbon in the presence of oxygen. BET and TEM have been employed to characterize the textural and structural properties of these coal chars. It is found that thermally relatively stable C-O species play a more important role compared with (RC)-C-2 = O and O-C = O. Enrichment of surface C-O species on char surface can enhance NO reduction and simultaneously control CO formation. Activated carbon and H2O2-modified activated carbon are also investigated to verify this point. Two different reaction mechanisms, i.e., surface carbon-oxygen complexes involved reactions and directly burn-off unoccupied surface, are put forward to explain different performance exhibited by the samples examined in this work. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordCoal Char No Reduction Carbon-oxygen Complexes
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordFluidized-bed Combustion ; Density-functional Theory ; Nitric-oxide Reduction ; Activated Carbons ; Flue-gas ; Chemistry ; Kinetics ; Gasification ; Temperature ; Mechanisms
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationNational Key Basic Research Program of Ministry Science and Technology of China(2014CB744304) ; Chinese Academy of Sciences (CAS)/State Administration of Foreign Expert Affairs (SAFEA) International Partnership Program for Creative Research Teams
WOS IDWOS:000403993400005
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Yan, Wenxia,Li, Songgeng,Fan, Chuigang,et al. Effect of surface carbon-oxygen complexes during NO reduction by coal char[J]. FUEL,2017,204:40-46.
APA Yan, Wenxia,Li, Songgeng,Fan, Chuigang,&Deng, Shuang.(2017).Effect of surface carbon-oxygen complexes during NO reduction by coal char.FUEL,204,40-46.
MLA Yan, Wenxia,et al."Effect of surface carbon-oxygen complexes during NO reduction by coal char".FUEL 204(2017):40-46.
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