Real part of the permittivity of coals and their rank

A study of the real part of the permittivity of a series of coals as a function of frequency (100 Hz–13 MHz) and temperature (200–400 K) showed that certain parameters are related to the microstructure of the carbonaceous phase. The results are consistent with the presence of basic structural units...

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Bibliographic Details
Published in:Fuel (Guildford) 1994-05, Vol.73 (5), p.738-741
Main Authors: Brach, I., Giuntini, J.C., Zanchetta, J.V.
Format: Article
Language:English
Subjects:
Applied sciences
coal
Coal and derived products
Energy
Exact sciences and technology
Fuels
molecular structure
permittivity
Structure, chemical and physical properties
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Summary:A study of the real part of the permittivity of a series of coals as a function of frequency (100 Hz–13 MHz) and temperature (200–400 K) showed that certain parameters are related to the microstructure of the carbonaceous phase. The results are consistent with the presence of basic structural units and an amorphous matrix, both being non-polar. A simple model based on this assumption allows coals of different nature and origin to be distinguished and classified.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(94)90017-5