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Título
Study of the desorption of phenol and phenolic compounds from activated carbon by liquid-phase temperature-programmed desorption
Autor(es)
Materia
Activated carbon
Adsorption
Thermal analysis
Diffusion
Fecha de publicación
1996
Editor
Elsevier
Citación
F. Salvador, M.D. Merchán, Study of the desorption of phenol and phenolic compounds from activated carbon by liquid-phase temperature-programmed desorption, Carbon, Volume 34, Issue 12, 1996, Pages 1543-1551, ISSN 0008-6223, https://doi.org/10.1016/S0008-6223(96)00105-4. (https://www.sciencedirect.com/science/article/pii/S0008622396001054)
Resumen
[EN]The thermal desorption in water of phenol, 2-dichlorophenol, 2,6-dichlorophenol, 4-nitrophenol
and 2,6-dichloro-4-nitrophenol adsorbed onto an activated carbon is studied by temperature-programmed
desorption (TPD) in liquid phase and by temperature-programmed adsorption-desorption (TPAD).
The TPAD thermograms indicate that the desorption in water of the five compounds is complete
before a temperature of 300°C is reached. The five phenolic compounds are stable below 260°C.
Application of the interruption test shows that diffusion controls the desorption of these compounds
in water. High-temperature adsorption isotherms and TPAD thermograms indicate that readsorption
occurs during thermal desorption. Study of TPAD permits the calculation of the activation energies of
adsorption and desorption. The values of these energies afford values for the adsorption bonding energy
that lie within the range of the hydrogen bond.
URI
ISSN
0008-6223
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