CaltechAUTHORS
  A Caltech Library Service

Solid state NMR characterization of Sn-Beta catalysts

Hwang, Son-Jong and Orazov, Marat and Gounder, Raj and Bermejo-Deval, Ricardo and Bhawe, Yashodhan and Davis, Mark E. (2014) Solid state NMR characterization of Sn-Beta catalysts. In: 247th ACS National Meeting & Exposition, March 16-20, 2014, Dallas, TX. http://resolver.caltech.edu/CaltechAUTHORS:20140506-085532422

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20140506-085532422

Abstract

High-resoln. multi-nuclear solid state NMR characterization has been performed to obtain insight into the mechanism of glucose reactions with Sn-beta zeolites. Glucose isomerization or epimerization reactions in water and non-aq. environments were examd. thoroughly, and correlations between catalyst structural changes and reaction selectivity were the primary focus in this study. In particular, we investigated local structural changes around the catalytically active Sn sites of ^(119)Sn-labeled beta zeolite in different states, including in their as synthesized form, after calcination in flowing air, after adsorption of sugar mols., and after performing catalytic reaction cycles. Magic angle spinning (MAS) and cross polarization (CP) (either from ^1H or ^(19)F) MAS ^(119)Sn NMR spectra provided insight into changes in local Sn coordination in the framework of zeolite beta under various conditions. Other NMR results, including ^(13)C NMR of adsorbed glucose or methanol, and ^(19)For ^(29)Si NMR of zeolite framework, will be used in interpretations of the catalytic reaction mechanisms.


Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
https://www.acs.org/content/acs/en/meetings/spring-2014.htmlOrganizationConference Website
ORCID:
AuthorORCID
Hwang, Son-Jong0000-0002-3210-466X
Additional Information:© 2014 American Chemical Society.
Record Number:CaltechAUTHORS:20140506-085532422
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140506-085532422
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45514
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 May 2014 16:38
Last Modified:26 Apr 2017 22:24

Repository Staff Only: item control page