The catalytic effect of titanium oxide based additives on the dehydrogenation and hydrogenation of milled MgH2

Hydrogen storage properties of nano-structured 0.65MgH2/0.35ScH2

“…The activation energy of the MgH 2 sample after 4 h ball milling with rotational speed of 300 rpm was 137 AE 1 kJ mol À1 (Fig. 6 (d)) consistent with the reported value of 133 AE 20 kJ mol À1 for an uncatalyzed ball milled MgH 2 system [4]. The hand milled and ball milled 0.65MgH 2 / 0.35ScH 2 have the same activation energy with value of 82 AE 1 kJ mol À1 , which is significantly lower than the value of MgH 2 as-received and also lower than a 4 h ball milled MgH 2 sample of 137 AE 1 kJ mol À1 , and is comparable to the values reported for a ball milled MgH 2 system with addition of catalysts, i.e.…”

“…The hand milled and ball milled 0.65MgH 2 / 0.35ScH 2 have the same activation energy with value of 82 AE 1 kJ mol À1 , which is significantly lower than the value of MgH 2 as-received and also lower than a 4 h ball milled MgH 2 sample of 137 AE 1 kJ mol À1 , and is comparable to the values reported for a ball milled MgH 2 system with addition of catalysts, i.e. 72 AE 3 kJ mol À1 for TiO 2 [4].…”

Preparation, characterization and utilization of (Ni:Cu) bimetallic system loaded on zeolites

“…The reduction of these alloys is another issue of challenging, thus many papers use high pressure hydrogen and high temperature in hydrogenation process [25][26][27][28][29]. The use of chemical method reduction is also reported [30].…”

Improvement in hydrogen storage properties of MgH2catalyzed with BaTiO3additive

“…In recent years, Ti-based catalysts, including Ti, TiO 2 , TiCl 3 , TiF 3 , were employed to decrease the desorption temperature of MgH 2 [19,20]. When ball milled with MgH 2 , the titanium oxides were found to result in significantly effects on reducing the onset dehydrogenation temperature of MgH 2 , and increased the hydrogenation and dehydrogenation rates [21].…”