TY - JOUR
T1 - High density hydrogen storage in nanocavities
T2 - Role of the electrostatic interaction
AU - Reguera, L.
AU - Roque, J.
AU - Hernández, J.
AU - Reguera, E.
N1 - Funding Information:
This study was supported by the Projects ICyTDF PIFUTP08-158 and SEP-CONACyT-123480. J. H. thanks ICyTDF and CLAF for the financial support provided for his PhD studies.
PY - 2010/12
Y1 - 2010/12
N2 - High pressure H2 adsorption isotherms at N2 liquid temperature were recorded for the series of cubic nitroprussides, Ni 1-xCox[Fe(CN)5NO] with x = 0, 0.5, 0.7, 1. The obtained data were interpreted according to the effective polarizing power for the metal found at the surface of the cavity. The cavity volume where the hydrogen molecules are accumulated was estimated from the amount of water molecules that are occupying that available space in the as-synthesized solids considering a water density of 1 g/cm3. The calculated cavity volume was then used to obtain the density of H2 storage in the cavity. For the Ni-containing material the highest storage density was obtained, in a cavity volume of 448.5 3 up to 10.4 hydrogen molecules are accumulated, for a local density of 77.6 g/L, above the density value corresponding to liquid hydrogen (71 g/L). Such high value of local density was interpreted as related to the electrostatic contribution to the adsorption potential for the hydrogen molecule within the cavity.
AB - High pressure H2 adsorption isotherms at N2 liquid temperature were recorded for the series of cubic nitroprussides, Ni 1-xCox[Fe(CN)5NO] with x = 0, 0.5, 0.7, 1. The obtained data were interpreted according to the effective polarizing power for the metal found at the surface of the cavity. The cavity volume where the hydrogen molecules are accumulated was estimated from the amount of water molecules that are occupying that available space in the as-synthesized solids considering a water density of 1 g/cm3. The calculated cavity volume was then used to obtain the density of H2 storage in the cavity. For the Ni-containing material the highest storage density was obtained, in a cavity volume of 448.5 3 up to 10.4 hydrogen molecules are accumulated, for a local density of 77.6 g/L, above the density value corresponding to liquid hydrogen (71 g/L). Such high value of local density was interpreted as related to the electrostatic contribution to the adsorption potential for the hydrogen molecule within the cavity.
KW - Adsorption forces
KW - Hydrogen adsorption
KW - Hydrogen storage
KW - Porous solids
UR - http://www.scopus.com/inward/record.url?scp=78049476335&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2010.09.007
DO - 10.1016/j.ijhydene.2010.09.007
M3 - Artículo
SN - 0360-3199
VL - 35
SP - 12864
EP - 12869
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 23
ER -