Catalytic nanoconfinement effect of in-situ synthesized Ni-containing mesoporous carbon scaffold (Ni-MCS) on the hydrogen storage properties of LiAlH4

Mohammad A Wahab; J N Beltramini

doi:10.1016/j.ijhydene.2014.09.010

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Catalytic nanoconfinement effect of in-situ synthesized Ni-containing mesoporous carbon scaffold (Ni-MCS) on the hydrogen storage properties of LiAlH4

Journal article

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Catalytic nanoconfinement effect of in-situ synthesized Ni-containing mesoporous carbon scaffold (Ni-MCS) on the hydrogen storage properties of LiAlH4

Mohammad A Wahab and J N Beltramini

International Journal of Hydrogen Energy, Vol.39(32), pp.18280-18290

2014

DOI: https://doi.org/10.1016/j.ijhydene.2014.09.010

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Abstract

lithium aluminium hydride

carbon

hydrogen storage

catalyst

confinement

We demonstrate in-situ synthesis of homogeneously dispersed Ni-containing mesoporous carbon scaffold (Ni-MCS) for improving dehydrogenation kinetics of LiAlH4 (hereafter denoted as LAH). LAH was impregnated into Ni-MCS scaffold (LAH confined-Ni-MCS) and also into pure mesoporous carbon scaffold (MCS) (LAH confined-MCS). The XRD patterns of LAH confined in Ni-MCS system indicate its amorphous nature, while 27Al MAS NMR spectroscopy confirmed the nanoconfinement of LAH in the Ni-MCS system. TPD-MS demonstrated the released of H2 at 66°C for the LAH confined-Ni-MCS system, with 84°C reduction of the onset desorption temperature (Tonset) as compared to the pure LAH. The H2 desorption from LAH confined-Ni-MCS is about 6.19 wt% H2. This strategy enables the exertion of nanoconfinement, Ni catalyst and compartmentalization effects over the growth of particle size and aggregation, which also significantly contributed to reduce the activation energy (Ea) (39.67 kJ/mol) of the system. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Details

Title: Catalytic nanoconfinement effect of in-situ synthesized Ni-containing mesoporous carbon scaffold (Ni-MCS) on the hydrogen storage properties of LiAlH4
Authors: Mohammad A Wahab (Author) - University of Queensland
J N Beltramini (Author) - University of Queensland
Publication details: International Journal of Hydrogen Energy, Vol.39(32), pp.18280-18290
Publisher: Elsevier Ltd.
Date published: 2014
DOI: 10.1016/j.ijhydene.2014.09.010
ISSN: 0360-3199
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450529202621
Output Type: Journal article

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