Non-Topotactic Transformation of Silicate Nanolayers into Mesostructured MFI Zeolite Frameworks During Crystallization

Zachariah J Berkson; Robert J Messinger; Kyungsu Na; Yongbeom Seo; Ryong Ryoo; Bradley F Chmelka

doi:10.1002/anie.201609983

Non-Topotactic Transformation of Silicate Nanolayers into Mesostructured MFI Zeolite Frameworks During Crystallization

Angew Chem Int Ed Engl. 2017 May 2;56(19):5164-5169. doi: 10.1002/anie.201609983. Epub 2017 Apr 5.

Authors

Zachariah J Berkson¹, Robert J Messinger², Kyungsu Na³, Yongbeom Seo⁴, Ryong Ryoo⁵, Bradley F Chmelka¹

Affiliations

¹ Department of Chemical Engineering, University of California, Santa Barbara, CA, 93106, USA.
² Department of Chemical Engineering, The City College of New York, CUNY, New York, NY, 10031, USA.
³ Department of Chemistry, Chonnam National University, Buk-gu, Gwangju, 61186, Republic of Korea.
⁴ Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
⁵ 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.

PMID: 28378529
DOI: 10.1002/anie.201609983

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 covalent ²⁹ Si-O-²⁹ Si bonds between intermediate nanolayered silicate moieties and the crystallizing MFI zeolite nanosheet framework.

Keywords: crystallization; dynamic nuclear polarization; layered silicates; solid-state NMR spectroscopy; zeolites.

Publication types

Letter
Research Support, U.S. Gov't, Non-P.H.S.