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Co-development of crystalline and mesoscopic order in mesostructured zeolite nanosheets

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Title
Co-development of crystalline and mesoscopic order in mesostructured zeolite nanosheets
Author(s)
Robert J. Messinger; Kyungsu Na; Yongbeom Seo; Ryong Ryoo; Bradley F. Chmelka
Publication Date
2015-01
Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.54, no.3, pp.927 - 931
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Mesoporous zeolites are a new and technologically important class of materials that exhibit improved diffusion and catalytic reaction properties compared to conventional zeolites with sub-nanometer pore dimensions. During their syntheses, the transient developments of crystalline and mesoscopic order are closely coupled and challenging to control. Correlated solid-state NMR, X-ray, and electron microscopy analyses yield new molecular-level insights on the interactions and distributions of complicated organic structure-directing agents with respect to crystallizing zeolite frameworks. The analyses reveal the formation of an intermediate layered silicate phase, which subsequently transforms into zeolite nanosheets with uniform nano- and mesoscale porosities. Such materials result from coupled surfactant self-assembly and inorganic crystallization processes, the interplay between which governs the onset and development of framework structural order on different length and time scales.
URI
https://pr.ibs.re.kr/handle/8788114/2142
ISSN
1433-7851
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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Angewandte Chemie_54(3) 927-931_2015.pdfDownload

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