Variable temperature EPR studies of Illinois No. 6 coal treated with donor and acceptor molecules
- Department of Energy, Pittsburgh, PA (United States)
The structure of coal is believed to consist of extended networks of polyaromatic hydrocarbons linked by a wide variety of bonding interactions. In addition to covalent bonds, these networks contain non-covalent interactions, such as hydrogen bonding and charge-transfer interactions. Charge transfer, which can be studied by electron paramagnetic resonance (EPR) spectroscopy, involves the association of electron donors and acceptors. Both donor and acceptor sites are known to exist in coal, although acceptor sites are probably far less common. Such intermolecular associations may play an important role in determining the relaxation behavior of the coal matrix in certain solvents, an important consideration in coal liquefaction. In this work, we have studied by variable temperature EPR spectroscopy, Illinois No. 6 coal, it`s extracts, and chromatographic fractions of the extract that have been treated with strong electron donors and acceptors.
- OSTI ID:
- 430316
- Report Number(s):
- CONF-960376-; ISSN 0569-3772; TRN: 97:000004-0044
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Vol. 41, Issue 2; Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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