Effect of mesoporosity against the deactivation of MFI zeolite catalyst during the methanol-to-hydrocarbon conversion process

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dc.contributor.authorKim, Jeongnamko
dc.contributor.authorChoi, MinKeeko
dc.contributor.authorRyoo, Ryongko
dc.date.accessioned2011-07-12T02:15:02Z-
dc.date.available2011-07-12T02:15:02Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-01-
dc.identifier.citationJOURNAL OF CATALYSIS, v.269, no.1, pp.219 - 228-
dc.identifier.issn0021-9517-
dc.identifier.urihttp://hdl.handle.net/10203/24578-
dc.description.abstractThe effects of mesoporosity on catalyst longevity of methanol-to-hydrocarbon (MTH) reactions have been investigated using a number of MFI zeolites with different degrees of mesoporosity, which were obtained via the post-synthetic desilication, dry-gel conversion in nanocarbon templates, and hydrothermal synthesis with the addition of organosilane surfactants. The MTH catalytic lifetime could be increased by more than three times due to the generation of mesopores. The cause for catalyst longevity was investigated by probing the location of coke that formed during the reaction using argon adsorption measurements. The result showed that the coke formed mainly on mesopore walls in the case of mesoporous zeolite. On the other hand, the coke was more heavily deposited inside micropores in the case of solely microporous zeolites. The short diffusion path lengths and hence facile diffusion of coke precursors were most likely the cause of the improvement in the catalytic lifetime. Crown Copyright (c) 2009 Published by Elsevier Inc. All rights reserved.-
dc.description.sponsorshipThis work was funded by the National Honor Scientist Program of the Korean Ministry of Education, Science, and Technology. The authors thank the National Nanofab Center for TEM measurementen
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCE-
dc.subjectPOROUS MATERIALS-
dc.subjectSINGLE-CRYSTALS-
dc.subjectHZSM-5 ZEOLITES-
dc.subjectCOKE FORMATION-
dc.subjectH-ZSM-5-
dc.subjectZSM-5-
dc.subjectFUELS-
dc.subjectDEALUMINATION-
dc.subjectDESILICATION-
dc.subjectGASOLINE-
dc.titleEffect of mesoporosity against the deactivation of MFI zeolite catalyst during the methanol-to-hydrocarbon conversion process-
dc.typeArticle-
dc.identifier.wosid000274042600023-
dc.identifier.scopusid2-s2.0-73649094133-
dc.type.rimsART-
dc.citation.volume269-
dc.citation.issue1-
dc.citation.beginningpage219-
dc.citation.endingpage228-
dc.citation.publicationnameJOURNAL OF CATALYSIS-
dc.identifier.doi10.1016/j.jcat.2009.11.009-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorChoi, MinKee-
dc.contributor.localauthorRyoo, Ryong-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorMesoporous zeolites-
dc.subject.keywordAuthorHierarchical-
dc.subject.keywordAuthorCoke formation-
dc.subject.keywordAuthorDeactivation-
dc.subject.keywordAuthorMethanol-to-gasoline-
dc.subject.keywordPlusPOROUS MATERIALS-
dc.subject.keywordPlusSINGLE-CRYSTALS-
dc.subject.keywordPlusHZSM-5 ZEOLITES-
dc.subject.keywordPlusCOKE FORMATION-
dc.subject.keywordPlusH-ZSM-5-
dc.subject.keywordPlusZSM-5-
dc.subject.keywordPlusFUELS-
dc.subject.keywordPlusDEALUMINATION-
dc.subject.keywordPlusDESILICATION-
dc.subject.keywordPlusGASOLINE-
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