Synthesis of mesoporous ZSM-5 zeolites through desilication and re-assembly processes
DC Field | Value | Language |
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dc.contributor.author | Yoo, Won Cheol | - |
dc.contributor.author | Zhang, Xueyi | - |
dc.contributor.author | Tsapatsis, Michael | - |
dc.contributor.author | Stein, Andreas | - |
dc.date.accessioned | 2021-06-23T07:54:19Z | - |
dc.date.available | 2021-06-23T07:54:19Z | - |
dc.date.issued | 2012-02 | - |
dc.identifier.issn | 1387-1811 | - |
dc.identifier.issn | 1873-3093 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/33221 | - |
dc.description.abstract | ZSM-5 zeolite crystals with secondary mesopores were synthesized by alkaline desilication and surfactant-induced re-assembly of dissolved species (i.e., silicates, aluminosilicates and zeolite crystal fragments) originating from the parent ZSM-5 crystals. The meso-zeolite products exhibit a dual-mesopore structure in which the smaller mesopores (ca. 3 nm) are attributed to surfactant-induced micelle formation involving dissolved species, and larger mesopores (ca. 10-30 nm) result from desilication processes occurring under the alkaline reaction conditions. The external surface area (i.e., the surface area due to mesopores, macropores and the external particle surface) of the meso-zeolite materials depends on the Si/Al ratio, the hydroxide concentration and the presence of surfactant, and it reaches values as high as 327 m(2) g(-1) when a surfactant is used. The crystallinity of the highest surface-area meso-zeolite is well preserved, maintaining values of ca. 83% (on the basis of micropore volume) or ca. 77% (on the basis of X-ray diffraction intensities) of the parent zeolite structures. Further physicochemical characterization by Al-27 and Si-29 magic-angle-spinning solid-state NMR spectroscopy, scanning and transmission electron microscopy, temperature-programmed ammonia desorption measurements, and inductively coupled plasma elementary analysis support the hypothesis that re-assembly of dissolved species of zeolite crystals occurred by surfactant-induced micellization, resulting in the high external surface area of the meso-zeolite materials. (C) 2011 Elsevier Inc. All rights reserved. | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Synthesis of mesoporous ZSM-5 zeolites through desilication and re-assembly processes | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.micromeso.2011.08.014 | - |
dc.identifier.scopusid | 2-s2.0-80053981718 | - |
dc.identifier.wosid | 000296933200020 | - |
dc.identifier.bibliographicCitation | MICROPOROUS AND MESOPOROUS MATERIALS, v.149, no.1, pp 147 - 157 | - |
dc.citation.title | MICROPOROUS AND MESOPOROUS MATERIALS | - |
dc.citation.volume | 149 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 147 | - |
dc.citation.endPage | 157 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Applied | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | MFI ZEOLITES | - |
dc.subject.keywordPlus | AL-27 MAS | - |
dc.subject.keywordPlus | CRYSTALS | - |
dc.subject.keywordPlus | DEALUMINATION | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | ROUTE | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordAuthor | Desilication | - |
dc.subject.keywordAuthor | ZSM-5 | - |
dc.subject.keywordAuthor | Mesoporous zeolite | - |
dc.subject.keywordAuthor | Surfactant | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1387181111003660?via%3Dihub | - |
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