TY - JOUR
T1 - Implications of structural differences between Cu-BTC and Fe-BTC on their hydrogen storage capacity
AU - Torres, N.
AU - Galicia, J.
AU - Plasencia, Y.
AU - Cano, A.
AU - Echevarría, F.
AU - Desdin-Garcia, L. F.
AU - Reguera, E.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/7/20
Y1 - 2018/7/20
N2 - Hydrogen is an attractive energy vector because it is free of carbon and at the same time contains a high energy density. The main challenge for hydrogen as fuel for massive applications is its storage at high density under technologically viable conditions. In that sense, its physical adsorption in porous solid continues being an option under study. Copper benzene-1,3,5-tricarboxilate (Cu-BTC) is one of the most widely studied metal-organic framework (MOF)-based porous solids, including its potential application for hydrogen storage. Its iron analogue, Fe-BTC has received relatively minor attention probably because it is obtained as a material of low crystallinity and this is a handicap to understand the involved adsorption interactions. In this contribution, we are reporting the implications of their structural differences on the hydrogen storage capacity, with emphasis in the probable guest-host interactions that determine the adsorption process and considering the structural features of them. The samples to be study were prepared using a solvothermal route and then characterized from infrared (IR), Mössbauer, and X-ray photoelectron (XPS) spectroscopies, powder X-ray diffraction (XRD) patterns, thermogravimetric (TG) curves and adsorption data. Both, the H2 adsorption isotherms and the corresponding adsorption heats show significant differences for the two materials, which are explained according to their structural differences.
AB - Hydrogen is an attractive energy vector because it is free of carbon and at the same time contains a high energy density. The main challenge for hydrogen as fuel for massive applications is its storage at high density under technologically viable conditions. In that sense, its physical adsorption in porous solid continues being an option under study. Copper benzene-1,3,5-tricarboxilate (Cu-BTC) is one of the most widely studied metal-organic framework (MOF)-based porous solids, including its potential application for hydrogen storage. Its iron analogue, Fe-BTC has received relatively minor attention probably because it is obtained as a material of low crystallinity and this is a handicap to understand the involved adsorption interactions. In this contribution, we are reporting the implications of their structural differences on the hydrogen storage capacity, with emphasis in the probable guest-host interactions that determine the adsorption process and considering the structural features of them. The samples to be study were prepared using a solvothermal route and then characterized from infrared (IR), Mössbauer, and X-ray photoelectron (XPS) spectroscopies, powder X-ray diffraction (XRD) patterns, thermogravimetric (TG) curves and adsorption data. Both, the H2 adsorption isotherms and the corresponding adsorption heats show significant differences for the two materials, which are explained according to their structural differences.
KW - Adsorption forces
KW - Adsorption heats
KW - Cu-BTC
KW - Fe-BTC
KW - Hydrogen adsorption
KW - Hydrogen storage
KW - MOF
UR - http://www.scopus.com/inward/record.url?scp=85045399828&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2018.04.016
DO - 10.1016/j.colsurfa.2018.04.016
M3 - Artículo
SN - 0927-7757
VL - 549
SP - 138
EP - 146
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -