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Published on: February 12, 2019
The kinetic properties of Mg(BH4)2 infiltrated in activated carbon
Maximilian Fichtner1, Zhirong Zhao-Karger, Jianjiang Hu
1Institute of Nanotechnology, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany. fichtner@int.fzk.de
Abstract:
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.
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