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SSZ-27: a small pore zeolite with large heart-shaped cavities determined using multi‐crystal electron diffraction

Smeets, Stef and Zones, Stacey I. and Xie, Dan and Palatinus, Lukáš and Pascual, Jesus and Hwang, Son-Jong and Schmidt, Joel E. and McCusker, Lynne B. (2019) SSZ-27: a small pore zeolite with large heart-shaped cavities determined using multi‐crystal electron diffraction. Angewandte Chemie International Edition, 58 (37). pp. 13080-13086. ISSN 1433-7851. PMCID PMC6773097. doi:10.1002/anie.201905049.

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The high‐silica zeolite SSZ‐27 was synthesized using one of the isomers of the organic structure‐directing agent that is known to produce the large‐pore zeolite SSZ‐26 (CON). The structure of the as‐synthesized form was solved using multi‐crystal electron diffraction data. Data were collected on eighteen crystals, and to obtain a high‐quality and complete data set for structure refinement, hierarchical cluster analysis was employed to select the data sets most suitable for merging. The framework structure of SSZ‐27 can be described as a combination of two types of cavities, one of which is shaped like a heart. The cavities are connected through shared 8‐ring windows to create straight channels that are linked together in pairs to form a one‐dimensional channel system. Once the framework structure was known, molecular modelling was used to find the best fitting isomer, and this, in turn, was isolated to improve the synthesis conditions for SSZ‐27.

Item Type:Article
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URLURL TypeDescription CentralArticle
Zones, Stacey I.0000-0002-3128-6481
Xie, Dan0000-0003-2467-976X
Hwang, Son-Jong0000-0002-3210-466X
Additional Information:© 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Accepted manuscript online: 26 July 2019; Manuscript accepted: 19 July 2019; Manuscript revised: 18 July 2019; Manuscript received: 23 April 2019. We thank Chevron Energy Technology Company for support and the continued interest in new zeolite materials from Dr. Robert Saxton and Dr. Georgie Scheuerman. We thank Dr. Ana Pinar and Dr. Antonio Cervellino for the powder diffraction measurements on the Materials Science Beamline at the SLS in Villigen, Switzerland and Dr. Kelvin Stone for help with measurements at the 2‐1 Powder Diffraction Beamline at the SSRL in Stanford (CA), US. We thank Kaustav Chaudhuri for the SEM images. This work was supported by the Swiss National Science Foundation (award numbers 165282 & 177761). The electron diffraction experiments were supported by the Knut and Alice Wallenberg Foundation (3DEM‐NATUR). The NMR facility at the California Institute of Technology was supported by the National Science Foundation (NSF) under Grant Number 9724240 and partially supported by the MRSEC Program of the NSF under Award Number DMR‐520565. The authors declare no conflict of interest.
Funding AgencyGrant Number
Chevron Energy Technology CompanyUNSPECIFIED
Swiss National Science Foundation (SNSF)165282
Swiss National Science Foundation (SNSF)177761
Knut and Alice Wallenberg Foundation3DEM-NATUR
Subject Keywords:SSZ-27 aluminosilicate; zeolite synthesis electron diffraction structure; determination
Issue or Number:37
PubMed Central ID:PMC6773097
Record Number:CaltechAUTHORS:20190726-100549302
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Official Citation:S. Smeets, S. I. Zones, D. Xie, L. Palatinus, J. Pascual, S.-J. Hwang, J. E. Schmidt, L. B. McCusker, Angew. Chem. Int. Ed. 2019, 58, 13080;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97440
Deposited By: Tony Diaz
Deposited On:26 Jul 2019 17:20
Last Modified:17 Feb 2022 22:43

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