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dc.contributor.authorWang, Ning
dc.contributor.authorSun, Wenjing
dc.contributor.authorHou, Yilin
dc.contributor.authorGe, Binghui
dc.contributor.authorHu, Ling
dc.contributor.authorNie, Jingqi
dc.contributor.authorQian, Weizhong
dc.contributor.authorWei, Fei
dc.date.accessioned2018-03-11T06:54:11Z
dc.date.available2018-03-11T06:54:11Z
dc.date.issued2018-02-15
dc.identifier.citationWang N, Sun W, Hou Y, Ge B, Hu L, et al. (2018) Crystal-plane effects of MFI zeolite in catalytic conversion of methanol to hydrocarbons. Journal of Catalysis 360: 89–96. Available: http://dx.doi.org/10.1016/j.jcat.2017.12.024.
dc.identifier.issn0021-9517
dc.identifier.doi10.1016/j.jcat.2017.12.024
dc.identifier.urihttp://hdl.handle.net/10754/627249
dc.description.abstractWe report the direct characterization of coke information in the clearly resolved (0 1 0) and (1 0 0) planes of various anisotropic MFI zeolites using EELS techniques, in a model reaction of methanol to hydrocarbons. For the first time, we found that the main coke species varied between different planes and depended on the crystal structure. The coke species was graphite carbon and polyaromatic hydrocarbon over MFI nanosheets and MFI with b-axis length 60 nm, respectively. The diffusion of aromatics out of conventional MFI zeolites was found only through the straight channels, while small molecules randomly diffused through both channels, resulting in different coke deposition on the (0 1 0) plane and the (1 0 0) plane from different precursors. As all product molecules diffused only through the straight channels, the MFI nanosheet showed a distinct crystal-plane selective effect of coke deposition, in contrast to nearly uniform coke distribution throughout the entire external surface for conventional zeolites. This anisotropic diffusion behavior influenced the gaseous and liquid products significantly, providing deep insight into the MFI catalyst for the selective control of products via crystal structure.
dc.description.sponsorshipWe thank the NSFC program (21506111, 2017YFB0602204) and the CNPC Innovation Foundation (2014D-5006-0506) for their support. National Supercomputing Center in Shenzhen (Shenzhen Cloud Computing Center) was acknowledged for providing software package.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S002195171730461X
dc.subjectMFI zeolite
dc.subjectCrystal-plane effects
dc.subjectCatalyst
dc.subjectCoke formation
dc.subjectMethanol conversion
dc.titleCrystal-plane effects of MFI zeolite in catalytic conversion of methanol to hydrocarbons
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalJournal of Catalysis
dc.contributor.institutionBeijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
dc.contributor.institutionChina-America Cancer Research Institute, Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical University, Dongguan, Guangdong 523808, China
dc.contributor.institutionBeijing National Laboratory for Condensed Mater Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
kaust.personWang, Ning


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