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Title

Activation of carbon nanofibres for hydrogen storage

AuthorsBlackman, James M.; Patrick, John W.; Arenillas de la Puente, Ana ; Shi, Wei; Snape, Colin E.
KeywordsCarbon nanofibres
Activation
Adsorption
Gas storage
Issue Date9-Jan-2006
PublisherElsevier
CitationCarbon 44(8): 1376-1385 (2006)
AbstractThe present study was aimed to investigate different methods of activation of carbon nanofibres, CNF, in order to determine the beneficial effect on the hydrogen sorption capacities of increasing the surface area. Two activation systems were used: physical activation with CO2 and chemical activation with KOH. A range of potential adsorbents were thus prepared by varying the temperature and time of activation. The structure of the CNF proved more suitable to activation by KOH than by CO2, with the former yielding higher surface area carbons (up to 1000 m2 g−1). The increased surface area, however, did not correspond directly with a proportional increase in hydrogen adsorption capacity. Although high surface areas are important for hydrogen storage by adsorption on solids, it would appear that it is essential that not only the physical, but also the chemical, properties of the adsorbents have to be considered in the quest for carbon based materials, with high hydrogen storage capacities.
Description10 pages, 10 figures, 6 tables.-- Printed version published Jul 2006.
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2005.11.015
URIhttp://hdl.handle.net/10261/11204
DOIhttp://dx.doi.org/10.1016/j.carbon.2005.11.015
ISSN0008-6223
Appears in Collections:(INCAR) Artículos
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