CAS OpenIR
Enhanced activity and sulfur resistance of Cu- and Fe-modified activated carbon for the reduction of NO by CO from regeneration gas
Xu, Zhicheng1,2; Li, Yuran1; Lin, Yuting1; Wang, Bin1; Gao, Panting3; Zhu, Tingyu1,4
2021-12-09
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Pages13
AbstractThe reduction of NO by CO was proposed to be applied for regeneration gas to remove NOx from industrial flue gas with activated carbon purification technology. To improve the activity and sulfur resistance for the reduction of NO by CO in regeneration gas, Cu and Fe modifications on activated carbon were investigated. And various samples were characterized by XRD, XPS, TPD, H-2-TPR, in situ DRIFTS and DFT calculations to explain the reaction mechanism and poisoning mechanism. The synergistic effects of oxygen-containing functional groups and metal sites show that -COOH acts as an anchor site for metals and that C-O-C acts as a protective site for Fe3+ under a SO2 atmosphere. Cu2+ sites have a high activity at low temperatures due to the large amount of adsorbed NO and the intermediate NOx- participating in the reaction with the NOx- pathway. Fe3+ sites have a high activity at high temperatures due to the high N-O dissociation activity with the *N pathway and -NCO pathway. DFT calculations proved that the binding Cu2+ and Fe3+ sites have higher activity than free Cu2+ and Fe3+ sites. A high content of SO2 exhibits various poisoning effects, mainly including the sulfation of metal sites, deposition of S, and consumption of CO. AC-Fe-H exhibits excellent resistance and stability against SO2 and H2O due to less S deposition caused by consumption through the S-CO reaction, slight sulfation caused by the protective effect of Fe2+ and C-O-C on Fe3+ sites and better hydrophobicity.
DOI10.1039/d1cy01951a
Language英语
WOS KeywordSELECTIVE CATALYTIC-REDUCTION ; BINARY METAL-OXIDES ; PREFERENTIAL OXIDATION ; FUNCTIONAL-GROUPS ; SEMI-COKE ; FLUE-GAS ; REMOVAL ; SO2 ; ADSORPTION ; SURFACE
Funding ProjectNational Key R&D Program of China[2018YFC0213406] ; National Natural Science Foundation of China[U1810209]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000732838300001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51487
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuran; Zhu, Tingyu
Affiliation1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Taiyuan Univ Technol, State Key Lab Clean & Efficient Coal Utilizat, Taiyuan 030024, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Xu, Zhicheng,Li, Yuran,Lin, Yuting,et al. Enhanced activity and sulfur resistance of Cu- and Fe-modified activated carbon for the reduction of NO by CO from regeneration gas[J]. CATALYSIS SCIENCE & TECHNOLOGY,2021:13.
APA Xu, Zhicheng,Li, Yuran,Lin, Yuting,Wang, Bin,Gao, Panting,&Zhu, Tingyu.(2021).Enhanced activity and sulfur resistance of Cu- and Fe-modified activated carbon for the reduction of NO by CO from regeneration gas.CATALYSIS SCIENCE & TECHNOLOGY,13.
MLA Xu, Zhicheng,et al."Enhanced activity and sulfur resistance of Cu- and Fe-modified activated carbon for the reduction of NO by CO from regeneration gas".CATALYSIS SCIENCE & TECHNOLOGY (2021):13.
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