U.S. Department of EnergyOffice of Scientific and Technical Information
Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report
Abstract
The goals of this program include developing a system for the analysis of the chemical forms of organic sulfur in coal and for study of coal particle surfaces by multifrequency EPR spectroscopy, ENDOR, and ESE spectroscopy and Applying it to coals, to the effects of treatment upon their sulfur-containing organic components, and to related carbonaceous materials (chars and the like). The approach is to utilize the naturally-occurring unpaired electrons in the organic structures of coals as spies to provide molecular structure information, reading out the information with Electron Paramagnetic Resonance (EPR) spectroscopy. Several forms of EPR are employed: Multifrequency continuous-wave (CW) EPR, from 1 GHz to 240 GHz source frequency; electron-nuclear double resonance (ENDOR), in which NMR spectra at paramagnetic centers are obtained by EPR detection; and pulsed EPR, including ESE (Electron Spin Echo) spectroscopy.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 10158151
- Report Number(s):
- DOE/PC/88921-13
ON: DE92015513
- DOE Contract Number:
- FG22-88PC88921
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: 1 Dec 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ORGANIC SULFUR COMPOUNDS; CHEMICAL ANALYSIS; COAL; SURFACES; PROGRESS REPORT; ELECTRON SPIN RESONANCE; SPECTROSCOPY; MICROSTRUCTURE; 010600; 400102; PROPERTIES AND COMPOSITION; CHEMICAL AND SPECTRAL PROCEDURES
Citation Formats
Belford, R L, and Clarkson, R B. Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report. United States: N. p., 1991.
Web. doi:10.2172/10158151.
Belford, R L, & Clarkson, R B. Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report. United States. https://doi.org/10.2172/10158151
Belford, R L, and Clarkson, R B. 1991.
"Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report". United States. https://doi.org/10.2172/10158151. https://www.osti.gov/servlets/purl/10158151.
@article{osti_10158151,
title = {Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report},
author = {Belford, R L and Clarkson, R B},
abstractNote = {The goals of this program include developing a system for the analysis of the chemical forms of organic sulfur in coal and for study of coal particle surfaces by multifrequency EPR spectroscopy, ENDOR, and ESE spectroscopy and Applying it to coals, to the effects of treatment upon their sulfur-containing organic components, and to related carbonaceous materials (chars and the like). The approach is to utilize the naturally-occurring unpaired electrons in the organic structures of coals as spies to provide molecular structure information, reading out the information with Electron Paramagnetic Resonance (EPR) spectroscopy. Several forms of EPR are employed: Multifrequency continuous-wave (CW) EPR, from 1 GHz to 240 GHz source frequency; electron-nuclear double resonance (ENDOR), in which NMR spectra at paramagnetic centers are obtained by EPR detection; and pulsed EPR, including ESE (Electron Spin Echo) spectroscopy.},
doi = {10.2172/10158151},
url = {https://www.osti.gov/biblio/10158151},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 01 00:00:00 EST 1991},
month = {Sun Dec 01 00:00:00 EST 1991}
}