Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties
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Gulicovski, Jelena J.Rašković-Lovre, Željka
Kurko, Sandra V.
Vujasin, Radojka
Jovanović, Zoran M.
Matović, Ljiljana
Grbović-Novaković, Jasmina
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The hydrogen desorption (HD) properties of MgH2-CeO2 composite prepared by mechanically milling of MgH2 and cubic CeO2nano have been examined. Morphology and microstructure of composites have been studied by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), laser scattering analysis and correlated with desorption properties obtained by means of temperature programmed desorption (TPD). It has been shown that decrease of crystallite and particle size of the samples lead to significant lowering of desorption temperature. Further, the activation energy for desorption (E-A(des)) has been calculated using Kissinger equation. Obtained value of 60 +/- 10 kJ/mol indicates that the activation energy of hydrogen desorption is sufficiently decreased by the catalytic effect of vacant CeO2 structure. Consequently the surface activation of sample plays a major role in HD reaction. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Keywords:
Milling / Nanocomposites / CeO2 / Desorption properties / Hydrogen storageSource:
Ceramics International, 2012, 38, 2, 1181-1186Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.ceramint.2011.08.047
ISSN: 0272-8842; 1873-3956
WoS: 000300472500039
Scopus: 2-s2.0-83555162515
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VinčaTY - JOUR AU - Gulicovski, Jelena J. AU - Rašković-Lovre, Željka AU - Kurko, Sandra V. AU - Vujasin, Radojka AU - Jovanović, Zoran M. AU - Matović, Ljiljana AU - Grbović-Novaković, Jasmina PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4699 AB - The hydrogen desorption (HD) properties of MgH2-CeO2 composite prepared by mechanically milling of MgH2 and cubic CeO2nano have been examined. Morphology and microstructure of composites have been studied by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), laser scattering analysis and correlated with desorption properties obtained by means of temperature programmed desorption (TPD). It has been shown that decrease of crystallite and particle size of the samples lead to significant lowering of desorption temperature. Further, the activation energy for desorption (E-A(des)) has been calculated using Kissinger equation. Obtained value of 60 +/- 10 kJ/mol indicates that the activation energy of hydrogen desorption is sufficiently decreased by the catalytic effect of vacant CeO2 structure. Consequently the surface activation of sample plays a major role in HD reaction. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties VL - 38 IS - 2 SP - 1181 EP - 1186 DO - 10.1016/j.ceramint.2011.08.047 ER -
@article{ author = "Gulicovski, Jelena J. and Rašković-Lovre, Željka and Kurko, Sandra V. and Vujasin, Radojka and Jovanović, Zoran M. and Matović, Ljiljana and Grbović-Novaković, Jasmina", year = "2012", abstract = "The hydrogen desorption (HD) properties of MgH2-CeO2 composite prepared by mechanically milling of MgH2 and cubic CeO2nano have been examined. Morphology and microstructure of composites have been studied by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), laser scattering analysis and correlated with desorption properties obtained by means of temperature programmed desorption (TPD). It has been shown that decrease of crystallite and particle size of the samples lead to significant lowering of desorption temperature. Further, the activation energy for desorption (E-A(des)) has been calculated using Kissinger equation. Obtained value of 60 +/- 10 kJ/mol indicates that the activation energy of hydrogen desorption is sufficiently decreased by the catalytic effect of vacant CeO2 structure. Consequently the surface activation of sample plays a major role in HD reaction. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties", volume = "38", number = "2", pages = "1181-1186", doi = "10.1016/j.ceramint.2011.08.047" }
Gulicovski, J. J., Rašković-Lovre, Ž., Kurko, S. V., Vujasin, R., Jovanović, Z. M., Matović, L.,& Grbović-Novaković, J.. (2012). Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties. in Ceramics International, 38(2), 1181-1186. https://doi.org/10.1016/j.ceramint.2011.08.047
Gulicovski JJ, Rašković-Lovre Ž, Kurko SV, Vujasin R, Jovanović ZM, Matović L, Grbović-Novaković J. Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties. in Ceramics International. 2012;38(2):1181-1186. doi:10.1016/j.ceramint.2011.08.047 .
Gulicovski, Jelena J., Rašković-Lovre, Željka, Kurko, Sandra V., Vujasin, Radojka, Jovanović, Zoran M., Matović, Ljiljana, Grbović-Novaković, Jasmina, "Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties" in Ceramics International, 38, no. 2 (2012):1181-1186, https://doi.org/10.1016/j.ceramint.2011.08.047 . .