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Ash- and Alkali-Poisoning Mechanisms for Commercial Vanadium-Titanic-Based Catalysts
Guo, Yangyang1,3; Luo, Lei1; Mu, Bailong1; Wang, Jian1; Zhu, Tingyu1,2,3
2019-12-11
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume58Issue:49Pages:22418-22426
Abstract

Two commercial catalysts at different temperatures were selected, with cement kiln ash physically loaded on them, to investigate the ash- and alkali-poisoning effect on selective catalytic reduction (SCR) catalysts. Ash loading on catalysts obviously decreased the amount of NO conversion. H2O vapor increased the ash-poisoning effect on catalysts, whereas SO2 addition apparently decreased the ash-poisoning effect because the NO conversion gradually returned to the same activity level as that for the catalysts without ash loading. In situ Diffuse Reflection Infrared Fourier Transform spectroscopy (DRIFT) was adopted to clarify this phenomenon. It was found that new Lewis acid sites and Bronsted acid sites had formed on the catalyst surface after SO2 treatment, and the new Bronsted acid sites enhanced the formation of NH4+. Moreover, the decomposition behavior of NH4HSO4 on the catalyst surface formed from HSO4- enhanced the NO conversion performance because of the reactions of NH4+ or NH3 from NH4HSO4 with gaseous NO.

DOI10.1021/acs.iecr.9b04454
Language英语
WOS KeywordScr Catalysts ; V2o5-wo3/tio2 Catalyst ; Nitric-oxide ; Reduction ; Deactivation ; Resistance ; Nh3-scr ; So2 ; Nox ; Nh3
Funding ProjectNational Key Research and Development Program of China[2017YFC0212502] ; National Science Foundation of China[51608508] ; National Science Foundation of China[51778600] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-2019017]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; National Science Foundation of China ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment
WOS IDWOS:000502687700027
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38591
Collection中国科学院过程工程研究所
Corresponding AuthorZhu, Tingyu
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China
3.Tsinghua Univ, Natl Engn Lab Flue Gas Pollutants Control Technol, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Guo, Yangyang,Luo, Lei,Mu, Bailong,et al. Ash- and Alkali-Poisoning Mechanisms for Commercial Vanadium-Titanic-Based Catalysts[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(49):22418-22426.
APA Guo, Yangyang,Luo, Lei,Mu, Bailong,Wang, Jian,&Zhu, Tingyu.(2019).Ash- and Alkali-Poisoning Mechanisms for Commercial Vanadium-Titanic-Based Catalysts.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(49),22418-22426.
MLA Guo, Yangyang,et al."Ash- and Alkali-Poisoning Mechanisms for Commercial Vanadium-Titanic-Based Catalysts".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.49(2019):22418-22426.
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