The use of heavy oil fly ash with high ash content (45 wt.%) as a precursor for the preparation of activated carbons has been investigated. The raw fly ash and the fly ash with lower ash content, obtained by a HCl/HF washing treatment, have been pyrolyzed at 900 C and then activated with CO2 in the temperature range of 800–900 C for different times. The activated carbons have been characterised as regards the surface area and the pore volume. The evolution of the porosity has been related to the burn-off degree.
|Autori interni:||SEGGIANI, MAURIZIA|
|Autori:||Caramuscio P.; De Stefano L.; Seggiani M.; Vitolo S.; Narducci P.|
|Titolo:||Preparation of activated carbons from heavy-oil fly ashes|
|Anno del prodotto:||2003|
|Digital Object Identifier (DOI):||10.1016/S0956-053X(02)00118-6|
|Appare nelle tipologie:||1.1 Articolo in rivista|