Catalytic effects of pseudo AB<sub>2</sub> phases on hydrogen sorption
Idioma
en
Article de revue
Este ítem está publicado en
Journal of Alloys and Compounds. 2009, vol. 469, n° 1-2, p. 137-141
Elsevier
Resumen en inglés
The compound GdNi<sub>4</sub>Mg in its amorphous and crystalline state has been investigated as catalyst for hydrogen sorption of magnesium. Addition of only 0.3 at.% of catalyst by ball milling resulted in an important ...Leer más >
The compound GdNi<sub>4</sub>Mg in its amorphous and crystalline state has been investigated as catalyst for hydrogen sorption of magnesium. Addition of only 0.3 at.% of catalyst by ball milling resulted in an important improvement of hydrogen sorption kinetics. Optimum milling time has been found to be 5 h. The amorphous and crystalline GdNi<sub>4</sub>Mg compounds give almost identical kinetics. Both absorption and desorption have been improved and the kinetics obtained are almost the same as other metal catalysts. No evidences of decomposition during ball milling or hydrogenation have been found so that it should be concluded that the intermetallic itself acts as a catalyst.< Leer menos
Palabras clave en inglés
Catalyst
Hydrogen sorption
Magnesium
Ternary compounds
Orígen
Importado de HalCentros de investigación