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dc.contributor.authorHumphries, Terry
dc.contributor.authorKalantzopoulos, G.
dc.contributor.authorLlamas-Jansa, I.
dc.contributor.authorOlsen, J.
dc.contributor.authorHauback, B.
dc.date.accessioned2017-01-30T12:48:35Z
dc.date.available2017-01-30T12:48:35Z
dc.date.created2015-10-29T04:09:52Z
dc.date.issued2013
dc.identifier.citationHumphries, T. and Kalantzopoulos, G. and Llamas-Jansa, I. and Olsen, J. and Hauback, B. 2013. Reversible hydrogenation studies of NaBH4 milled with Ni-containing additives. Journal of Physical Chemistry C. 117 (12): pp. 6060-6065.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/25450
dc.identifier.doi10.1021/jp312105w
dc.description.abstract

NaBH4 has long been identified as a viable hydrogen-storage material due to a theoretical gravimetric H2 capacity of 10.6 wt %. Because of the high enthalpy of decomposition of 108 ± 3 kJ mol -1, thermal decomposition of the pristine material does not occur until at least 500 C, and thus NaBH4 has yet to be utilized in hydrogen-storage processes. In this study, NaBH4 has been milled with a variety of Ni-containing additives to investigate the effects on the temperatures required for thermal desorption of H2 by temperature-programmed desorption (TPD) measurements and the products characterized by powder X-ray diffraction (PXD). Ni-containing additives have been determined to significantly enhance the thermal desorption of H2 by at least 60 C (Ni (65 wt %) on Si/Al2O3). PCT cycling experiments have been conducted to ascertain their effects on the reversible hydrogenation of the milled NaBH4. PXD analysis indicates that Ni reacts with B evolved during thermal decomposition to form NixB y species including Ni3B, Ni2B, and Ni 3B4. A catalyst screening study of NaBH4 with a variety of nanoparticles, chlorides, borides, and mesoporous materials has also been conducted, the most effective of which has been found to be Pd nanoparticles, which have a desorption temperature of 420 C, a decrease of at least 85 C. © 2013 American Chemical Society.

dc.titleReversible hydrogenation studies of NaBH4 milled with Ni-containing additives
dc.typeJournal Article
dcterms.source.volume117
dcterms.source.number12
dcterms.source.startPage6060
dcterms.source.endPage6065
dcterms.source.issn1932-7447
dcterms.source.titleJournal of Physical Chemistry C
curtin.departmentDepartment of Physics and Astronomy
curtin.accessStatusFulltext not available


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