TY - JOUR
T1 - Hydrogen storage in activated carbons produced from coals of different ranks
T2 - Effect of oxygen content
AU - Tellez-Juárez, M. C.
AU - Fierro, V.
AU - Zhao, W.
AU - Fernández-Huerta, N.
AU - Izquierdo, M. T.
AU - Reguera, E.
AU - Celzard, A.
N1 - Funding Information:
The French authors from laboratories hosted by ENSTIB gratefully acknowledge the financial support of the CPER 2007–2013 “Structuration du Pôle de Compétitivité Fibres Grand’Est” (Competitiveness Fibre Cluster), through local (Conseil Général des Vosges), regional (Région Lorraine), national (DRRT and FNADT) and European (FEDER) funds. CONACyT (through the projects 129048 and I010/296/2012) and FEDER (Nanoporous project) are also acknowledged for their financial support.
PY - 2014/3/26
Y1 - 2014/3/26
N2 - 20 activated carbons (ACs) were prepared by activation of four coals of different ranks (bituminous, low-ash bituminous and sub-bituminous coals, and one anthracite) with potassium hydroxide, in order to evaluate their hydrogen storage capacities at -196 C. The effect of surface area and oxygen content on hydrogen storage was examined. Oxygen content was determined by temperature-programmed desorption. The significance of oxygen content on hydrogen storage capacity was evaluated by Analysis of Variance (ANOVA). Apparent surface areas higher than 3000 m2 g-1 and hydrogen adsorption as high as 6.8 wt.% were obtained. The best results were obtained with ACs from bituminous coals. No significant effect of oxygen content on hydrogen adsorption was observed. We concluded that surface area controls hydrogen storage capacity at -196 C.
AB - 20 activated carbons (ACs) were prepared by activation of four coals of different ranks (bituminous, low-ash bituminous and sub-bituminous coals, and one anthracite) with potassium hydroxide, in order to evaluate their hydrogen storage capacities at -196 C. The effect of surface area and oxygen content on hydrogen storage was examined. Oxygen content was determined by temperature-programmed desorption. The significance of oxygen content on hydrogen storage capacity was evaluated by Analysis of Variance (ANOVA). Apparent surface areas higher than 3000 m2 g-1 and hydrogen adsorption as high as 6.8 wt.% were obtained. The best results were obtained with ACs from bituminous coals. No significant effect of oxygen content on hydrogen adsorption was observed. We concluded that surface area controls hydrogen storage capacity at -196 C.
KW - Activated carbon
KW - Hydrogen storage
KW - KOH activation
KW - Oxygen content
UR - http://www.scopus.com/inward/record.url?scp=84897927046&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2014.01.071
DO - 10.1016/j.ijhydene.2014.01.071
M3 - Artículo
SN - 0360-3199
VL - 39
SP - 4996
EP - 5002
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 10
ER -