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Solid State NMR Characterization of Sn-Beta Zeolites that Catalyze Glucose Isomerization and Epimerization

Hwang, Son-Jong and Gounder, Rajamani and Bhawe, Yashodhan and Orazov, Marat and Bermejo-Deval, Ricardo and Davis, Mark E. (2015) Solid State NMR Characterization of Sn-Beta Zeolites that Catalyze Glucose Isomerization and Epimerization. Topics in Catalysis, 58 (7-9). pp. 435-440. ISSN 1022-5528. doi:10.1007/s11244-015-0388-7.

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High resolution, multi-nuclear solid state nuclear magnetic resonance (NMR) characterizations are carried out in order to obtain insights into the structural features of Sn-beta zeolites that catalyze glucose isomerization or epimerization reactions in water and methanol solvents. In particular, we focus on investigating the local structural changes to catalytically-active framework Sn sites of different ^(119)Sn-labeled beta zeolites, including the calcined, dehydrated, rehydrated, and post-sugar isomerization catalysis forms. Magic angle spinning (MAS) and cross polarization MAS (either from ^1H or ^(19)F) ^(119)Sn NMR spectra provide evidence for changes to the local framework Sn coordination in the presence of water and sugar molecules, and provide insights into structural features of adsorbed intermediates that may be relevant in sugar isomerization reaction pathways.

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URLURL TypeDescription ReadCube access
Hwang, Son-Jong0000-0002-3210-466X
Gounder, Rajamani0000-0003-1347-534X
Davis, Mark E.0000-0001-8294-1477
Additional Information:© 2015 Springer Science+Business Media New York. Published online: 31 March 2015. We thank Drs. Yuriy Roman-Leshkov, Manuel Moliner, and Eranda Nikolla for their earlier contributions in the Davis group at California Institute of Technology. This work was financially supported as part of the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001004. The NMR facility at Caltech 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.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001004
Subject Keywords:Sn-beta, Isomerization, ^(119)Sn NMR, Glucose, Fructose, Solid state NMR
Issue or Number:7-9
Record Number:CaltechAUTHORS:20150407-102201459
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56423
Deposited By: Ruth Sustaita
Deposited On:07 Apr 2015 19:24
Last Modified:10 Nov 2021 20:59

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