Journal
CARBON
Volume 41, Issue 9, Pages 1801-1807Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-6223(03)00150-7
Keywords
activated carbon; dielectric properties
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Carbonaceous materials are amenable to microwave heating to varying degrees. The primary indicator of susceptibility is the complex permittivity (epsilon*), of which the real component correlates with polarization and the imaginary term represents dielectric loss. For a given material, the complex permittivity is dependent upon both frequency and temperature. Here we report the complex permittivities of three activated carbons of diverse origin over the frequency range from 0.2 to 26 GHz. Dielectric polarization-relaxation phenomena for these materials are also characterized. Measurements were made using a coaxial dielectric probe and vector network analyzer based system across the temperature region between 22 and 190 degreesC. (C) 2003 Elsevier Science Ltd. All rights reserved.
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