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TitleSpin-mapping of Coal Structures with ESE and ENDOR
Author(s)Belford, R. L.; Clarkson, R. B.
Publication DateDecember 01, 1989
Report NumberDOE/PC/88921-5
Unique IdentifierACC0255
Other NumbersLegacy ID: DE91004343; OSTI ID: 6501193
Research OrgUniversity of Illinois at Urbana-Champaign, Urbana, IL (USA)
Contract NoFG22-88PC88921
Sponsoring OrgUS Department of Energy, Office of Fossil Energy (DOE/FE)
Subject01 Coal, Lignite, And Peat; 75 Condensed Matter Physics, Superconductivity And Superfluidity; Coal; Molecular Structure; Macerals; Aromatics; DMSO; ENDOR; Image Processing; Porosity; Progress Report; Spatial Distribution; Spectra; Spectroscopy; Swelling; Vitrinite; Carbonaceous Materials; Distribution; Document Types; Energy Sources; Fossil Fuels; Fuels; Magnetic Resonance; Materials; Organic Compounds; Organic Sulfur Compounds; Processing; Resonance; Sulfoxides
Related Web PagesNon-medical Uses of Computed Tomography and Nuclear Magnetic Resonance
AbstractThe broad goals of this project are to determine by nondestructive magnetic resonance methods chemical and physical structural characteristics of organic parts of native and treated coals. In this project period, we have begun to explore a technique which promises to enable us to follow to course of coal cleaning processes with microscopic spatial resolution. For the past five years, our laboratory has worked on extensions of the EPR technique as applied to coal to address these analytical problems. In this report we (1) describe the world's first nuclear magnetic resonance imaging results from an Illinois {number sign}6 coal and (2) transmit a manuscript describing how organic sulfur affect the very-high-frequency EPR spectra of coals. Magnetic resonance imaging (MRI) is a non-destructive technique that has found wide medical application as a means of visualizing the interior of human bodies. We have used MRI techniques to study the diffusion of an organic solvent (DMSO) into the pores of Illinois {number sign}6 coal. Proton MRI images reveal that this solvent at room temperature does not penetrate approximately 30% of the coal volume. Regions of the coal that exclude solvent could be related to inertinite and mineral components. A multi-technique imaging program is contemplated.
803 K
10 pp.
 
View Document 
  


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