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Hydrogen adsorption studies on single wall carbon nanotubes

AuthorsAnsón Casaos, Alejandro ; Callejas, M. Alicia; Benito, Ana M. ; Maser, Wolfgang K. ; Izquierdo Pantoja, María Teresa ; Rubio Villa, Begoña ; Jagiello, Jacek; Thommes, M.; Parra Soto, José Bernardo ; Martínez Fernández de Landa, María Teresa
KeywordsCarbon nanotubes
Adsorption properties
Issue Date10-Feb-2004
CitationCarbon 42(7): 1243-1248 (2004)
AbstractHydrogen adsorption data on as-grown and heat-treated single walled carbon nanotubes (SWNTs) obtained by a volumetric procedure using a Quantachrome Autosorb-1 equipment are presented. The amounts of hydrogen adsorbed at atmospheric pressure reach approximately 0.01 wt.% at 298 K and 1 wt.% at 77 K. The isosteric heat of adsorption has been calculated for both samples from H2 equilibrium adsorption data at three temperatures, having initial values of 7.42 and 7.75 kJ mol−1. Studies in porous structure by N2 adsorption and density measurements in helium pycnometer are reported.
Description6 pages, 4 figures.-- Issue title: Carbon '03 Conference (Oviedo, Spain, Jul 6-10, 2003).
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2004.01.038
Appears in Collections:(ICB) Artículos
(INCAR) Artículos
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