title: Non-Topotactic Transformation of Silicate Nanolayers into Mesostructured MFI Zeolite Frameworks During Crystallization.
abstract: Mesostructured MFI zeolite nanosheets are established to crystallize non-topotactically through a nanolayered silicate intermediate during hydrothermal synthesis. Solid-state 2D NMR analyses, with sensitivity enhanced by dynamic nuclear polarization (DNP), provide direct evidence of shared covalent29Si-O-29Si bonds between intermediate nanolayered silicate moieties and the crystallizing MFI zeolite nanosheet framework.
authors.affiliation: Department of Chemical Engineering, University of California, Santa Barbara, CA, 93106, USA.
authors.forename: Zachariah J
authors.initials: ZJ
authors.lastname: Berkson
authors.affiliation: Department of Chemical Engineering, The City College of New York, CUNY, New York, NY, 10031, USA.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Messinger
authors.affiliation: Department of Chemistry, Chonnam National University, Buk-gu, Gwangju, 61186, Republic of Korea.
authors.forename: Kyungsu
authors.initials: K
authors.lastname: Na
authors.affiliation: Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
authors.forename: Yongbeom
authors.initials: Y
authors.lastname: Seo
authors.affiliation: Department of Chemistry, Korea Advanced Institute of Science and Technology, Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon, 305-701, Republic of Korea.
authors.forename: Ryong
authors.initials: R
authors.lastname: Ryoo
authors.affiliation: Department of Chemical Engineering, University of California, Santa Barbara, CA, 93106, USA.
authors.forename: Bradley F
authors.initials: BF
authors.lastname: Chmelka
keywords: crystallization; dynamic nuclear polarization; layered silicates; solid-state NMR spectroscopy; zeolites