Activation of polymer blend carbon nanofibres by alkaline hydroxides and their hydrogen storage performances

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Title: Activation of polymer blend carbon nanofibres by alkaline hydroxides and their hydrogen storage performances
Authors: Suárez García, Fabián | Vilaplana-Ortego, Eduardo | Kunowsky, Mirko | Kimura, M. | Oya, Asao | Linares-Solano, Angel
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Gun Ei Chemical Ind. Co. | Gunma University. Graduate School of Engineering
Keywords: Carbon nanofibres | Chemical activation | Hydrogen storage | Packing density
Knowledge Area: Ciencia de los Materiales e Ingeniería Metalúrgica | Química Inorgánica
Date Created: 2009
Issue Date: Nov-2009
Publisher: Elsevier
Citation: SUÁREZ-GARCÍA, F., et al. "Activation of polymer blend carbon nanofibres by alkaline hydroxides and their hydrogen storage performances". International Journal of Hydrogen Energy. Vol. 34, Issue 22 (Nov. 2009). ISSN 0360-3199, pp. 9141-9150
Abstract: In the present work we study the hydroxide activation (NaOH and KOH) of phenol-formaldehyde resin derived CNFs prepared by a polymer blend technique to prepare highly porous activated carbon nanofibres (ACNFs). Morphology and textural characteristics of these ACNFs were studied and their hydrogen storage capacities at 77 K (at 0.1 MPa and at high pressures up to 4 MPa) were assessed, and compared, with reported capacities of other porous carbon materials. Phenol-formaldehyde resin derived carbon fibres were successfully activated with these two alkaline hydroxides rendering highly microporous ACNFs with reasonable good activation process yields up to 47 wt.% compared to 7 wt.% yields from steam activation for similar surface areas of 1500 m2/g or higher. These nano-sized activated carbons present interesting H2 storage capacities at 77 K which are comparable, or even higher, to other high quality microporous carbon materials. This observation is due, in part, to their nano-sized diameters allowing to enhance their packing densities to 0.71 g/cm3 and hence their resulting hydrogen storage capacities.
Sponsor: MEC (Acción complementaria; ENE2005-23824-E/CON), Generalitat Valenciana (Acción complementaria; ACOMP06/089), MICINN (Project CTQ2006-08958/PPQ).
ISSN: 0360-3199 (Print) | 1879-3487 (Online)
DOI: 10.1016/j.ijhydene.2009.09.026
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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