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dc.contributor.authorVázquez Santos, Beatriz-
dc.contributor.authorCastro Muñiz, Alberto-
dc.contributor.authorMartínez Alonso, Amelia-
dc.contributor.authorDíez Tascón, Juan Manuel-
dc.date.accessioned2009-03-16T11:20:17Z-
dc.date.available2009-03-16T11:20:17Z-
dc.date.issued2008-05-31-
dc.identifier.citationMicroporous and Mesoporous Materials 116(1/3): 622-626 (2008)en_US
dc.identifier.issn1387-1811-
dc.identifier.urihttp://hdl.handle.net/10261/11615-
dc.description5 pages, 5 figures, 2 tables. -- Printed version published Dec 2008en_US
dc.description.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.en_US
dc.description.sponsorshipWe thank Dr. Tooru Kitagawa (Toyobo Research Center, Otsu, Shiga, Japan) for kindly providing the Zylon® AS and HM samples. Financial support from the Spanish MEC (projects CTQ2005-01905-C04-02-PPQ and VEM2004-08576) is gratefully acknowledged.en_US
dc.format.extent22195 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsclosedAccessen_US
dc.subjectActivated Carbon fibersen_US
dc.subjectMicroporosityen_US
dc.subjectMesoporosityen_US
dc.subjectPolymeric precursorsen_US
dc.subjectPoly (p-phenylene benzobisoxazole)en_US
dc.titlePorous texture evolution in activated carbon fibers prepared from poly (p-phenylene benzobisoxazole) by carbon dioxide activationen_US
dc.typeartículoen_US
dc.identifier.doi10.1016/j.micromeso.2008.05.033-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.micromeso.2008.05.033en_US
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