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Temperature effects on chemical structure and motion in coal. Quarterly report, April--June, 1995 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
10 pages : digital, PDF file
Additional Creators
Colorado State University. Department of Chemistry, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
As described in previous reports, the effects of moderate temperatures (up to 230 C) is to increase molecular/macromolecular mobility in coals, as determined by ¹H CRAMPS (Combined Rotation And Multiple Pulse Spectroscopy) measurements, especially dipolar-dephasing experiments. Pyridine-saturated coals have also been studied with the same kinds of NMR experiments. The author found that thermal activation and solvent saturation promote the molecular mobility of coals in quite different ways. These results have provided some new insight into the molecular/macromolecular structure and dynamics of coals. In this report, the author compares ¹H CRAMPS results obtained on the original (untreated) Argonne Premium coal 601 with those obtained on the pyridine extraction residue of coal 601. These results are consistent with previous results and provide further information on the structure and dynamics of coals.
Report Numbers
E 1.99:doe/pc/93206--7
doe/pc/93206--7
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/30/1995.
"doe/pc/93206--7"
"DE96000905"
Maciel, G.E.
Funding Information
FG22-93PC93206
View MARC record | catkey: 13836550