DICP OpenIR
Insight into the deactivation mode of methanol-to-olefins conversion over SAPO-34: Coke, diffusion, and acidic site accessibility
Gao, Shushu1,2; Xu, Shutao1; Wei, Yingxu1; Qiao, Qinglong3; Xu, Zhaochao3; Wu, Xinqiang1,2; Zhang, Mozhi1; He, Yanli1; Xu, Shuliang1; Liu, Zhongmin1,4
Corresponding AuthorXu, Shutao(xushutao@dicp.ac.cn) ; Wei, Yingxu(weiyx@dicp.ac.cn) ; Liu, Zhongmin(liuzm@dicp.ac.cn)
KeywordMethanol-to-olefins conversion SAPO-34 Coke Intracrystalline diffusion Acidity
Source PublicationJOURNAL OF CATALYSIS
2018-11-01
ISSN0021-9517
DOI10.1016/j.jcat.2018.09.010
Volume367Pages:306-314
Funding ProjectNational Natural Science Foundation of China[21473182] ; National Natural Science Foundation of China[91545104] ; National Natural Science Foundation of China[91745109] ; National Natural Science Foundation of China[21422606] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2014165] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSW-JSC024] ; DICP[DMTO201603]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP
WOS SubjectChemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordMAS-PFG NMR ; CRYSTALLIZATION PROCESS ; PARTICLE SPECTROSCOPY ; HYDROCARBON FORMATION ; REACTION-MECHANISM ; SHAPE SELECTIVITY ; REACTION CENTERS ; ZEOLITES ; CATALYST ; CRYSTALS
AbstractThe whole reaction course of methanol-to-olefins (MTO) conversion over SAPO-34 catalyst with crystal size 7-10 pm has been investigated by multiple spectroscopic techniques. The reaction and deactivation of methanol conversion are closely correlated to the amount, size, and location of coke formed in the CHA nanocages. A nonuniform spatial distribution of these coke species in the individual SAPO-34 crystals is revealed by a combination of hyperpolarized (HP) Xe-129 NMR and confocal fluorescence microscopy (CFM) techniques. Combined with acidic properties and diffusion performance, the bulky coke species formed at the shell layer of the crystals led to an increase of intracrystalline diffusion resistance and a decrease in accessible acidic sites in the deactivated catalyst. The overall catalyst deactivation mode of the MTO reaction is presented in terms of coke formation and location, mass transport variation, and accessibility of Bronsted acid sites in the SAPO-34 catalyst. (C) 2018 Elsevier Inc. All rights reserved.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; DICP ; DICP
WOS IDWOS:000452578700031
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166419
Collection中国科学院大连化学物理研究所
Corresponding AuthorXu, Shutao; Wei, Yingxu; Liu, Zhongmin
Affiliation1.Chinese Acad Sci, Natl Engn Lab Methanol Olefins, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dalian Natl Lab Clean Energy,Dalian Inst Chem Phy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Gao, Shushu,Xu, Shutao,Wei, Yingxu,et al. Insight into the deactivation mode of methanol-to-olefins conversion over SAPO-34: Coke, diffusion, and acidic site accessibility[J]. JOURNAL OF CATALYSIS,2018,367:306-314.
APA Gao, Shushu.,Xu, Shutao.,Wei, Yingxu.,Qiao, Qinglong.,Xu, Zhaochao.,...&Liu, Zhongmin.(2018).Insight into the deactivation mode of methanol-to-olefins conversion over SAPO-34: Coke, diffusion, and acidic site accessibility.JOURNAL OF CATALYSIS,367,306-314.
MLA Gao, Shushu,et al."Insight into the deactivation mode of methanol-to-olefins conversion over SAPO-34: Coke, diffusion, and acidic site accessibility".JOURNAL OF CATALYSIS 367(2018):306-314.
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