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The self-protection effect of reactant gas on the moisture stability of CuSAPO-34 catalyst for NH3-SCR

文献类型：期刊论文

作者Cao, Yi1; Fan, Dong1; Sun, Lijng1,2; Yang, Miao1; Cao, Lei1; Sun, Tantan1,2; Xu, Shutao1; Tian, Peng1; Liu, Zhongmin1
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2019-10-15
卷号374页码:832-839
关键词CuSAPO-34 Stability Residual adspecies Self-protection NH3-SCR
ISSN号1385-8947
DOI10.1016/j.cej.2019.05.227
通讯作者Tian, Peng(tianpeng@dicp.ac.cn) ; Liu, Zhongmin(liuzm@dicp.ac.cn)
英文摘要The 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.
WOS关键词DEACTIVATION MECHANISM RESEARCH ; HYDROTHERMAL STABILITY ; CU/SAPO-34 CATALYSTS ; CU-SAPO-34 CATALYSTS ; BRONSTED ACIDITY ; NOX ; REDUCTION ; COPPER ; NH3 ; AMMONIA
资助项目China 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]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000477652900076
出版者ELSEVIER SCIENCE SA
资助机构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 ; 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
源URL[http://cas-ir.dicp.ac.cn/handle/321008/173690]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Tian, Peng; Liu, Zhongmin
作者单位1.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
推荐引用方式
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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来源：大连化学物理研究所

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