Investigation on the porosity development by CO 2 activation in heavy oil fly ashes

The porosity evolution in heavy oil fly ashes subjected to activation with CO 2 has been examined. The work examined four different heavy oil fly ashes that, after preliminary acid leaching, have been pyrolyzed at 900 °C and then activated with CO 2 at the same temperature for different times. A dif...

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Bibliographic Details
Published inFuel (Guildford) Vol. 82; no. 12; pp. 1441 - 1450
Main Authors Seggiani, Maurizia, Vitolo, Sandra, Narducci, Piero
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2003
Subjects
Activated carbons
CO 2 activation
Heavy oil fly ash
Porosity development
Porosity development
CO 2 activation
Heavy oil fly ash
Activated carbons
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Summary:The porosity evolution in heavy oil fly ashes subjected to activation with CO 2 has been examined. The work examined four different heavy oil fly ashes that, after preliminary acid leaching, have been pyrolyzed at 900 °C and then activated with CO 2 at the same temperature for different times. A different evolution of porosity was observed according to the different reactivity of the samples during activation. The activated samples have been characterised as regards the surface area and the pore volume. The scanning electron microscope–energy dispersive spectrometer microanalysis has been used to interpret the experimental results.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0016-2361
1873-7153
DOI:10.1016/S0016-2361(03)00063-2