DICP OpenIR
The self-protection effect of reactant gas on the moisture stability of CuSAPO-34 catalyst for NH3-SCR
Cao, Yi1; Fan, Dong1; Sun, Lijng1,2; Yang, Miao1; Cao, Lei1; Sun, Tantan1,2; Xu, Shutao1; Tian, Peng1; Liu, Zhongmin1
Corresponding AuthorTian, Peng(tianpeng@dicp.ac.cn) ; Liu, Zhongmin(liuzm@dicp.ac.cn)
KeywordCuSAPO-34 Stability Residual adspecies Self-protection NH3-SCR
Source PublicationCHEMICAL ENGINEERING JOURNAL
2019-10-15
ISSN1385-8947
DOI10.1016/j.cej.2019.05.227
Volume374Pages:832-839
Funding ProjectChina Postdoctoral Science Foundation[2017M621169] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-JSC040] ; National Natural Science Foundation of China[91545104] ; National Natural Science Foundation of China[21606221] ; National Natural Science Foundation of China[21676262]
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS Research AreaEngineering
WOS KeywordDEACTIVATION MECHANISM RESEARCH ; HYDROTHERMAL STABILITY ; CU/SAPO-34 CATALYSTS ; CU-SAPO-34 CATALYSTS ; BRONSTED ACIDITY ; NOX ; REDUCTION ; COPPER ; NH3 ; AMMONIA
AbstractThe surface of CuSAPO-34 catalysts after NH3-SCR reaction (T <= 400 degrees C) is revealed to have residual adspecies. Cycle hydration methods are designed to explore the influence of the residual species upon the moisture stability of CuSAPO-34. It is demonstrated that the residual species on the catalyst surface are NH3 adspecies, which could help inhibit the transformation of Si(OAl)(4) species to Si islands and prevent the decay of Bronsted acid sites (BAS) during the hydration treatment; the better preserved acidity and the existence of NH3 facilitate the preservation of isolated Cu2+ ions and their reducibility, and thus the SCR activity of the catalysts. The protective effect of residual NH3 species against the low-temperature water vapor is prominent when T <= 300 degrees C, which declines gradually and becomes weak when T > 400 degrees C due to the desorption of NH3 adspecies. The present work implies that the moisture stability of CuSAPO-34 catalyst could be simply ameliorated by locating it in an appropriate zone of the tailpipe to avoid the excessive desorption of the NH3 adspecies.
Language英语
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000477652900076
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/173691
Collection中国科学院大连化学物理研究所
Corresponding AuthorTian, Peng; Liu, Zhongmin
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Cao, Yi,Fan, Dong,Sun, Lijng,et al. The self-protection effect of reactant gas on the moisture stability of CuSAPO-34 catalyst for NH3-SCR[J]. CHEMICAL ENGINEERING JOURNAL,2019,374:832-839.
APA Cao, Yi.,Fan, Dong.,Sun, Lijng.,Yang, Miao.,Cao, Lei.,...&Liu, Zhongmin.(2019).The self-protection effect of reactant gas on the moisture stability of CuSAPO-34 catalyst for NH3-SCR.CHEMICAL ENGINEERING JOURNAL,374,832-839.
MLA Cao, Yi,et al."The self-protection effect of reactant gas on the moisture stability of CuSAPO-34 catalyst for NH3-SCR".CHEMICAL ENGINEERING JOURNAL 374(2019):832-839.
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