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Surface Chemistry of Nanocrystalline Zeolites Probed by Magnetic Resonance Techniques


EMSL Project ID
30438

Abstract

Nanocrystalline zeolites (with crystal sizes of less than 50 nm) are versatile, porous nanomaterials with potential applications in a broad range of areas including bifunctional catalysis, drug delivery, environmental protection, and sensing, to name a few. The characterization of the properties of nanocrystalline zeolites on a fundamental level is critical to the realization of these innovative applications. My research group has developed methods for the efficient preparation of high quality, monodisperse, nanocrystalline (<50 nm) zeolites and we are investigating potential applications in environmental catalysis, the decontamination of chemical warfare agents (CWAs) and drug delivery. Nanocrystalline zeolites have unique surface chemistry that is distinct from conventional microcrystalline zeolite materials. In the proposed research project, magnetic resonance techniques (solid state nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR)) will be used to elucidate the structure and reactivity of nanocrystalline zeolites. Density functional theory (DFT) calculations will enhance data interpretation through chemical shift, quadrupole coupling constant, g-value and hyperfine calculations. This project is responsive to the EMSL PNNL science theme of Science of Interfacial Phenomena because it involves studies of zeolites which are important catalytic and absorptive materials with environmental and energy applications. In addition, the proposed project includes magnetic resonance experiments, as well as synergistic computational work.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2008-09-08
End Date
2010-09-30
Status
Closed

Team

Principal Investigator

Sarah Larsen
Institution
University of Iowa

Team Members

Anton Petushkov
Institution
University of Iowa

William Ames
Institution
University of Iowa

Michael Bowman
Institution
University of Alabama

Related Publications

Framework Stability of Nanocrystalline NaY in Aqueous Solution at Varying pH. Anton Petushkov, Jasmine Freeman, Sarah C. Larsen-, Langmuir, 2010, 26(9), 6695?6701.
Pulsed Electron Paramagnetic Resonance Techniques for Structure Determination, William M. Ames, Russell G. Larsen, Sarah C. Larsen, Encyclopedia of Analytical Chemistry, eds R.A. Meyers, John Wiley: Chichester. DOI: 9780470027318. Published 15th March 2010