The kinetic properties of Mg(BH4)2 infiltrated in activated carbon.
A wet incipient impregnation procedure was developed to infiltrate Mg(BH4)2 into the voids of pre-treated activated carbon with a pore diameter of < 2 nm. The thermal data of the composite material showed a strong broadening of the signals. The peak decomposition temperature was shifted to lower values by the infiltration. A Kissinger analysis of bulk Mg(BH4)2 and the nanocomposite revealed a high activation barrier for the first step of the dehydrogenation of the bulk material, which was lowered by a factor of two for the nanoconfined hydride.
Institute of Nanotechnology, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany. fichtner@int.fzk.de
Maximilian
M
Fichtner
Zhirong
Z
Zhao-Karger
Jianjiang
J
Hu
Arne
A
Roth
Peter
P
Weidler
D002606:Charcoal / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods; D006859:Hydrogen / Q000737:chemistry* / Q000302:isolation & purification; D007700:Kinetics; D046911:Macromolecular Substances / Q000737:chemistry; D008274:Magnesium / Q000737:chemistry*; D008422:Materials Testing; D008956:Models, Chemical; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
D046911:Macromolecular Substances; D002606:Charcoal; D006859:Hydrogen; D008274:Magnesium