English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11615
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Porous texture evolution in activated carbon fibers prepared from poly (p-phenylene benzobisoxazole) by carbon dioxide activation

AuthorsVázquez Santos, Beatriz ; Castro Muñiz, Alberto ; Martínez Alonso, Amelia ; Díez Tascón, Juan Manuel
KeywordsActivated Carbon fibers
Microporosity
Mesoporosity
Polymeric precursors
Poly (p-phenylene benzobisoxazole)
Issue Date31-May-2008
PublisherElsevier
CitationMicroporous and Mesoporous Materials 116(1/3): 622-626 (2008)
AbstractActivated carbon fibers (ACFs) were prepared from poly (p-phenylene benzobisoxazole) (PBO) in two varieties, as spun (AS) and high-modulus (HM). The precursor polymer was carbonized at 1123 K followed by physical activation with carbon dioxide at 1073 K to different burn-off (BO) degrees. The porous texture of the obtained materials was characterized by physical adsorption of nitrogen at 77 K and carbon dioxide at 273 K. Following CO2 activation, the surface area and pore volume of the obtained ACFs progressively increased with increasing BO. The obtained adsorbents were principally supermicroporous, with a certain contribution from narrow mesopores. The pore size distributions became increasingly heterogeneous as the activation degree increased. The most significant difference between the two varieties of PBO used as precursors was a greater abundance of wide mesopores in the adsorbents prepared from the high-modulus variety.
Description5 pages, 5 figures, 2 tables. -- Printed version published Dec 2008
Publisher version (URL)http://dx.doi.org/10.1016/j.micromeso.2008.05.033
URIhttp://hdl.handle.net/10261/11615
DOI10.1016/j.micromeso.2008.05.033
ISSN1387-1811
Appears in Collections:(INCAR) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.