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Enhanced hydrogen storage properties of LiAlH4 catalyzed by CoFe2O4 nanoparticles
dc.contributor.author | Li, Ziliang |
dc.contributor.author | Zhai, Fuqiang |
dc.contributor.author | Wan, Qi |
dc.contributor.author | Liu, Zhiwei |
dc.contributor.author | Shan, Jiawei |
dc.contributor.author | Li, Ping |
dc.contributor.author | Volinsky, Alex A. |
dc.contributor.author | Qu, Xuanhui |
dc.date.accessioned | 2014-07-09T13:00:55Z |
dc.date.available | 2015-05-01T02:32:05Z |
dc.date.created | 2014 |
dc.date.issued | 2014 |
dc.identifier.citation | Li, Z. [et al.]. Enhanced hydrogen storage properties of LiAlH4 catalyzed by CoFe2O4 nanoparticles. "RSC Advances", 2014, vol. 4, núm. 36, p. 18989-18997. |
dc.identifier.issn | 2046-2069 |
dc.identifier.uri | http://hdl.handle.net/2117/23460 |
dc.description.abstract | The catalytic effects of CoFe2O4 nanoparticles on the hydrogen storage properties of LiAlH4 prepared by ball milling were investigated. The onset desorption temperature of the LiAlH4 + 2 mol% CoFe2O4 sample is 65 °C, which is 90 °C lower that of the as-received LiAlH4, with approximately 7.2 wt% hydrogen released at 250 °C. The isothermal desorption results show that for the 2 mol% CoFe2O4 doped sample dehydrogenated at 120 °C, 6.8 wt% of hydrogen can be released within 160 min, which is 6.1 wt% higher than that of the as-received LiAlH4 under the same conditions. Through the differential scanning calorimetry (DSC) and the Kissinger desorption kinetics analyses, the apparent activation energy, Ea, of the 2 mol% CoFe2O4 doped sample is calculated as 52.4 kJ mol -1 H2 and 86.5 kJ mol-1 H2 for the first two decomposition processes. This is 42.4 kJ mol-1 H 2 and 86.1 kJ mol-1 H2 lower compared with the pristine LiAlH4, respectively, indicating considerably improved dehydrogenation kinetics by doping the CoFe2O4 catalyst in the LiAlH4 matrix. From the Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses, a series of finely dispersed Fe and Co species with a range of valence states, produced from the reactions between LiAlH4 and CoFe2O4, play a synergistic role in remarkably improving LiAlH4 dehydrogenation properties. The rehydrogenation properties of the LiAlH4 + 2 mol% CoFe 2O4 sample have also been investigated at 140 °C under 6.5 MPa pressure held for 2.5 h |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Conformat de materials |
dc.subject.lcsh | Cobalt compounds |
dc.subject.lcsh | Hydrides |
dc.subject.lcsh | LiAlH4 |
dc.subject.lcsh | CoFe2O4 |
dc.title | Enhanced hydrogen storage properties of LiAlH4 catalyzed by CoFe2O4 nanoparticles |
dc.type | Article |
dc.subject.lemac | Ferrita de cobalt |
dc.subject.lemac | Cobalt -- Compostos |
dc.subject.lemac | Hidrur de liti i alumini |
dc.subject.lemac | Hidrurs |
dc.contributor.group | Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials |
dc.identifier.doi | 10.1039/c4ra00841c |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 14897007 |
dc.description.version | Postprint (published version) |
local.citation.author | Li, Z.; Zhai, F.; Wan, Q.; Liu, Z.; Shan, J.; Li, P.; Volinsky, A.A.; Qu, X. |
local.citation.publicationName | RSC Advances |
local.citation.volume | 4 |
local.citation.number | 36 |
local.citation.startingPage | 18989 |
local.citation.endingPage | 18997 |
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