English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Hydrogen absorption of magnesium (Mg) catalyzed by 1 mol niobium oxide (Nb2O5) was demonstrated under the low temperature condition even at -50°C. The kinetic and thermodynamic properties were examined for MgH2 with and without Nb2O5. By considering the remarkable absorption features at such lowtemperature, the essential hydrogen absorption properties were investigated under accurate isothermal conditions. As a result, the activation energy of hydrogen absorption for the catalyzed Mg was evaluated to be 38 kJ・mol-1, which was significantly smaller than that of MgH2 without the catalyst. The kinetic improvement was also found on the hydrogen desorption process. On the other hand, thermodynamic properties were not changed by the catalyst. Therefore, the Nb2O5 addition mainly affects the reaction rates between Mg and hydrogen and shows the excellent catalytic effects. [doi:10.2320/jinstmet.JC201316]

Catalytic Effect of Niobium Oxide on Hydrogen Absorption and Desorption Process for Magnesium