Reference : A comparison of physical activation of carbon xerogels with carbon dioxide with chemical...
Scientific journals : Article
Engineering, computing & technology : Chemical engineering
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/38970
A comparison of physical activation of carbon xerogels with carbon dioxide with chemical activation using hydroxides
English
Contreras, María S [> > > >]
Páez, Carlos A [> > > >]
Zubizarreta, Leire [> > > >]
Léonard, Angélique mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
Blacher, Silvia mailto [Université de Liège - ULg > Département des sciences cliniques > Labo de biologie des tumeurs et du développement >]
Olivera-Fuentes, Claudio G [> > > >]
Arenillas, Ana [> > > >]
Pirard, Jean-Paul mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
Job, Nathalie mailto [Université de Liège - ULg > Département de chimie appliquée > Département de chimie appliquée >]
Sep-2010
Carbon
Elsevier Science
48
11
3157-3168
Yes (verified by ORBi)
International
0008-6223
Oxford
United Kingdom
[en] Carbon xerogels synthesized with a fixed resorcinol/sodium carbonate molar ratio (R/C) were physically activated using CO2. The effect of activation temperature and activation time on the final properties of the activated carbon xerogels was evaluated. The specific surface area increases from ~600 m2 g-1 to 2000 m2 g-1 and more by increasing the temperature and duration of the activation step. A comparison between physical activation with CO2 and chemical activation with hydroxides was also performed: it was found that both processes produce an increase of the micropore volume and specific surface area without altering the meso-macroporosity developed during the synthesis. However, chemical activation can lead to the development of the narrow microporosity mainly whereas, in physical activation, the widening of the narrow micropores takes place whatever the process conditions.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals
http://hdl.handle.net/2268/38970
10.1016/j.carbon.2010.04.054

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