English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/91845
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 91 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

CO2 adsorption by activated templated carbons

Autor Sevilla Solís, Marta ; Fuertes Arias, Antonio Benito
Palabras clave Carbon dioxide adsorption
Chemical activation
Templated carbon
Fecha de publicación ene-2012
EditorElsevier
Citación Journal of Colloid and Interface Science 366(1): 147-154 (2012)
Resumen[EN] Highly porous carbons have been prepared by the chemical activation of two mesoporous carbons obtained by using hexagonal- (SBA-15) and cubic (KIT-6)-ordered mesostructured silica as hard templates. These materials were investigated as sorbents for CO2 capture. The activation process was carried out with KOH at different temperatures in the 600–800 °C range. Textural characterization of these activated carbons shows that they have a dual porosity made up of mesopores derived from the templated carbons and micropores generated during the chemical activation step. As a result of the activation process, there is an increase in the surface area and pore volume from 1020 m2 g−1 and 0.91 cm3 g−1 for the CMK-8 carbon to a maximum of 2660 m2 g−1 and 1.38 cm3 g−1 for a sample activated at 800 °C (KOH/CMK-8 mass ratio of 4). Irrespective of the type of templated carbon used as precursor or the operational conditions used for the synthesis, the activated samples exhibit similar CO2 uptake capacities, of around 3.2 mmol CO2 g−1 at 25 °C. The CO2 capture capacity seems to depend on the presence of narrow micropores (<1 nm) rather than on the surface area or pore volume of activated carbons. Furthermore, it was found that these porous carbons exhibit a high CO2 adsorption rate, a good selectivity for CO2–N2 separation and they can be easily regenerated.
Versión del editorhttp://dx.doi.org/10.1016/j.jcis.2011.09.038
URI http://hdl.handle.net/10261/91845
DOI10.1016/j.jcis.2011.09.038
ISSN0021-9797
E-ISSN1095-7103
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
CO2_Adsorption_Sevilla.pdf1,13 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.