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- W2135959466 abstract "The catalytic effects of MnFe2O4 nanoparticles on the dehydrogenation properties of MgH2, prepared by ball milling, are investigated for the first time. The onset dehydrogenation temperature for MgH2 + 7 mol% MnFe2O4 is 300 °C, 140 °C lower, compared with the as-received MgH2. The isothermal dehydriding kinetics shows that 7 mol% MnFe2O4-doped sample can release 5.05 wt.% hydrogen in 1 h at 300 °C under 0.1 MPa pressure, whereas as-received MgH2 releases only 0.49 wt.% hydrogen for the same conditions, indicating significantly improved dehydrogenation. From the differential scanning calorimetry and the Kissinger desorption kinetics analysis, the apparent activation energy of 7 mol% MnFe2O4-doped sample is 64.55 kJ mol−1, resulting in 190.34 kJ mol−1 decrease, compared with the as-received MgH2, which is lower than that of MgH2 doped with other reported transition metal oxide catalysts. Based on X-ray diffraction and X-ray photoelectron spectroscopy tests, Mg2MnO4 and Fe0.872O phases together play a synergistic role in remarkably improving MgH2 dehydriding properties." @default.
- W2135959466 created "2016-06-24" @default.
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- W2135959466 date "2013-10-01" @default.
- W2135959466 modified "2023-10-12" @default.
- W2135959466 title "MgH2 dehydrogenation properties improved by MnFe2O4 nanoparticles" @default.
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- W2135959466 doi "https://doi.org/10.1016/j.jpowsour.2013.03.096" @default.
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