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Facile Synthesis, Characterization, and Catalytic Behavior of a Large-Pore Zeolite with the IWV Framework

Schmidt, Joel E. and Chen, Cong-Yan and Brand, Stephen K. and Zones, Stacey I. and Davis, Mark E. (2016) Facile Synthesis, Characterization, and Catalytic Behavior of a Large-Pore Zeolite with the IWV Framework. Chemistry: a European Journal, 22 (12). pp. 4022-4029. ISSN 0947-6539. doi:10.1002/chem.201504717.

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Large-pore microporous materials are of great interest to process bulky hydrocarbon and biomass-derived molecules. ITQ-27 (IWV) has a two-dimensional pore system bounded by 12-membered rings (MRs) that lead to internal cross-sections containing 14 MRs. Investigations into the catalytic behavior of aluminosilicate (zeolite) materials with this framework structure have been limited until now due to barriers in synthesis. The facile synthesis of aluminosilicate IWV in both hydroxide and fluoride media is reported herein using simple, diquaternary organic structure-directing agents (OSDAs) that are based on tetramethylimidazole. In hydroxide media, a zeolite product with Si/Al=14.8–23.2 is obtained, while in fluoride media an aluminosilicate product with Si/Al up to 82 is synthesized. The material produced in hydroxide media is tested for the hydroisomerization of n-hexane, and results from this test reaction suggest that the effective pore size of zeolites with the IWV framework structure is similar to but slightly larger than that of ZSM-12 (MTW), in fairly good agreement with crystallographic data.

Item Type:Article
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Davis, Mark E.0000-0001-8294-1477
Additional Information:© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: November 23, 2015; First published: 2 February 2016. We would like to thank Chevron Energy Technology Company for providing funding for this work. J.E.S. would like to thank the NDSEG for their support through a fellowship. We would like to thank Dr. S. Hwang (Caltech) for his assistance with NMR data collection.
Funding AgencyGrant Number
Chevron Energy Technology CompanyUNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20160202-100531931
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Official Citation:J. E. Schmidt, C.-Y. Chen, S. K. Brand, S. I. Zones, M. E. Davis, Chem. Eur. J. 2016, 22, 4022.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64160
Deposited By: Tony Diaz
Deposited On:02 Feb 2016 22:41
Last Modified:10 Nov 2021 23:26

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