2024-03-29T15:22:01Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/444142018-11-15T12:59:52Zcom_10261_84com_10261_5col_10261_337
2012-01-18T10:50:49Z
urn:hdl:10261/44414
Thermal treatment of active carbons: A comparison between microwave and electrical heating
Menéndez Díaz, José Ángel
Menéndez, E.M.
García, A.
Parra Soto, José Bernardo
Pis Martínez, José Juan
activated carbon
surface oygen complexes
microwave
Two commercial activated carbons were subjected to thermal treatment in a N-2 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.
2012-01-18T10:50:49Z
2012-01-18T10:50:49Z
1999
artículo
The Journal of microwave power and electromagnetic energy 34(3):137-143 (1999)
0832-7823
http://hdl.handle.net/10261/44414
eng
openAccess
International Microwave Power Institute