Jump to main content
Jump to site search

Issue 55, 2017
Previous Article Next Article

Catalytic effect of MnFe2O4 on dehydrogenation kinetics of NaAlH4–MgH2

Author affiliations

Abstract

The hydrogen desorption properties and decomposition processes of MnFe2O4-doped NaAlH4–MgH2 composites are investigated. The onset temperatures of three dehydrogenation steps of MnFe2O4-doped NaAlH4–MgH2 composites are 92, 116 and 115 °C lower than those of as-milled NaAlH4–MgH2. Furthermore, NaAlH4–MgH2 + 3 mol% MnFe2O4 displays good cycling stability at 300 °C and only a slight capacity loss after four cycles. The apparent activation energies estimated from the Kissinger analysis for NaAlH4- and MgH2-relevant decomposition are found to be 51.29 and 105.34 kJ mol−1, respectively. XRD and XPS results show that NaFeO2, Mg2MnO4 and the amorphous Mn/MnOx species as well as iron oxides contribute to enhancing the dehydrogenation performance of NaAlH4–MgH2.

Graphical abstract: Catalytic effect of MnFe2O4 on dehydrogenation kinetics of NaAlH4–MgH2

Back to tab navigation

Publication details

The article was received on 24 May 2017, accepted on 04 Jul 2017 and first published on 10 Jul 2017


Article type: Paper
DOI: 10.1039/C7RA05845D
RSC Adv., 2017,7, 34522-34529
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Catalytic effect of MnFe2O4 on dehydrogenation kinetics of NaAlH4–MgH2

    Y. Huang, P. Li, Q. Wan, Z. Liu, W. Zhao, J. Zhang, Z. Pan, L. Xu and X. Qu, RSC Adv., 2017, 7, 34522
    DOI: 10.1039/C7RA05845D

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements