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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
Thermal Treatment of Active
Carbons: A Comparison Between Microwave and Electrical Heating [PDF] |
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AUTHORS |
J. A.
Menéndez, E A Menéndez, A. García, J. B. Parry and J. J. Pis
1999 34 3 137-143 |
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Abstract Two commercial activated carbons
were subjected to thermal treatment in a N2 atmosphere using a
microwave multimode resonant cavity and a conventional electric tube furnace
as heat sources. The temperature of the carbon bed during the microwave
treatment was monitored using an infrared pyrometer and an Inconel sheltered type-K thermocouple. A comparison
between both methods of measuring temperature was made. When similar
treatment temperatures are used, both techniques produce similar changes in
the textural and chemical properties of the activated carbons. However
microwave treatment is much less time-consuming than conventional heating.
Microwave treatment in an inert environment seems to be an efficient and
attractive way of removing oxygenated functionalities from carbon surfaces
and of increasing the hydrophobicity and basicity of carbons. Key Words: Aciivated carbon. Surface oxygen complexes |
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