Anisotropic EPR and ENDOR studies of sulfur-containing heterocyclic compounds adsorbed on silica-alumina surfaces
type: CreativeWork
description: The physical phenomenon of an organic molecule adsorbing onto a silica-alumina surface is a topic of great interest. Many questions concerning exactly how this phenomenon occurs still remain unanswered. Although Electron Paramagnetic Resonance and Electron-Nuclear Double Resonance techniques are sensitive to the radical species that are often produced upon adsorption of these molecules onto these surfaces, the analysis is very difficult and forbidding. Anisotropic interactions that are present in these systems makes characterization of the experimental spectra a very challenging problem. It is possible, however, to obtain crucial information about the interaction between the molecule and the catalyst surface through the analysis of these complex spectra. This thesis examines and analyzes an adsorbate/catalyst system with special qualities which are of interest to high-sulfur coal researchers. It also presents a general method which was developed to perform the analysis of spectra of highly anisotropic systems correctly.
abstract: The physical phenomenon of an organic molecule adsorbing onto a silica-alumina surface is a topic of great interest. Many questions concerning exactly how this phenomenon occurs still remain unanswered. Although Electron Paramagnetic Resonance and Electron-Nuclear Double Resonance techniques are sensitive to the radical species that are often produced upon adsorption of these molecules onto these surfaces, the analysis is very difficult and forbidding. Anisotropic interactions that are present in these systems makes characterization of the experimental spectra a very challenging problem. It is possible, however, to obtain crucial information about the interaction between the molecule and the catalyst surface through the analysis of these complex spectra. This thesis examines and analyzes an adsorbate/catalyst system with special qualities which are of interest to high-sulfur coal researchers. It also presents a general method which was developed to perform the analysis of spectra of highly anisotropic systems correctly.
author: Youn, Dennis James
language: eng
keywords: Chemistry, Physical
date published: 2011-05-07T12:09:39Z
date modified: 2026-07-22T22:25:14Z
provider: University of Illinois - Urbana-Champaign
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Illinois at Urbana-Champaign

PropertyValue
property ID: Handle
value: http://hdl.handle.net/2142/19506