A Caltech Library Service

Tin Silsesquioxanes as Models for the “Open” Site in Tin-Containing Zeolite Beta

Brand, Stephen K. and Labinger, Jay A. and Davis, Mark E. (2016) Tin Silsesquioxanes as Models for the “Open” Site in Tin-Containing Zeolite Beta. ChemCatChem, 8 (1). pp. 121-124. ISSN 1867-3880. doi:10.1002/cctc.201501067.

[img] PDF - Supplemental Material
See Usage Policy.


Use this Persistent URL to link to this item:


The use of biomass as a resource to produce value-added products has garnered significant interest as a means of reducing reliance on fossil fuels. This task is complicated by the complex, highly functionalized nature of abundant biomass derivatives, such as glucose. Tin-containing zeolite Beta (Sn-Beta) can selectively isomerize glucose to fructose through a 1,2-intramolecular hydride shift (1,2-HS) or selectively produce mannose through a 1,2-intramolecular carbon shift (1,2-CS) by titration of the silanol groups with sodium (Na-Sn-Beta). To understand the structure–activity relationships between the conditions of the active sites in the zeolite, two molecular models (tin silsesquioxanes) of the tin sites in the zeolite were synthesized. Tin silsesquioxanes that contain an octahedral tin site with and without an adjacent silanol group selectively form fructose through a 1,2-HS and mannose through a 1,2-CS, respectively, and provide further evidence for the nature of the active sites in Sn-Beta.

Item Type:Article
Related URLs:
URLURL TypeDescription
Labinger, Jay A.0000-0002-1942-9232
Davis, Mark E.0000-0001-8294-1477
Additional Information:© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: September 30, 2015; First published: 5 November 2015. Research was supported as part of the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under Award number DE-SC0001004. S.K.B. wishes to acknowledge funding from the National Science FoundationGraduate Research Fellowship Program under Grant No. DGE-1144469. The authors would like to thank Marat Orazov for many helpful discussions.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001004
NSF Graduate Research FellowshipDGE-1144469
Subject Keywords:epimerization; glucose conversion; isomerization; Lewis acids; tin silsesquioxanes
Issue or Number:1
Record Number:CaltechAUTHORS:20151109-101324263
Persistent URL:
Official Citation:S. K. Brand, J. A. Labinger, M. E. Davis, ChemCatChem 2016, 8, 121
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61986
Deposited By: Tony Diaz
Deposited On:09 Nov 2015 18:28
Last Modified:10 Nov 2021 22:56

Repository Staff Only: item control page