HYDROGENATION PROPERTIES OF Mg-Al-Ti-Zr-C COMPOSITE

0473833 - ÚFM 2018 RIV CZ eng C - Conference Paper (international conference)
Král, Lubomír - Čermák, Jiří - Roupcová, Pavla
HYDROGENATION PROPERTIES OF Mg-Al-Ti-Zr-C COMPOSITE.
NANOCON 2016. 8th International Conference on Nanomaterials - Research and Application. Conference Proceedings. Ostrava: Tanger, 2017, s. 75-79. ISBN 978-80-87294-71-0.
[NANOCON 2016. International Conference on Nanomaterials - Research and Application /8./. Brno (CZ), 19.10.2016-21.10.2016]
R&D Projects: GA MŠMT(CZ) LQ1601
Institutional support: RVO:68081723
Keywords : Hydrides * hydrogen storage * catalysis * hydrogen * Mg-alloys
OECD category: Thermodynamics

The improvement of hydrogen storage properties of ball-milled Mg-Al-Ti-Zr-C composite was studied in this
paper. It has been previously shown, that the addition of Ti, Zr, Al and C improves storage properties of Mg.
This beneficial effect of additives upon hydrogen storage properties can be explained by catalysis by the
nanoparticles rich in Ti, Zr or Al located on the surface of Mg grains. They provide effective pathways for the
hydrogen diffusion into the MgH2. The morphological and microstructural characteristics were investigated by
scanning electron microscope Tescan Lyra 3 and by X-ray diffraction. The hydrogen sorption was measured
by Sieverts method using Setaram PCT-Pro device.
Studied experimental composite absorbed 4.2 wt.% H 2 at 573 K and 3 wt.% H 2 at 523K within 10 min. The
hydrogen storage capacity of the composite was about 4.6% wt.% H 2 and 4.2% wt.% H 2 at 573K and 523K,
respectively.
Permanent Link: http://hdl.handle.net/11104/0275036