The clamping effect in the complex hydride Mg2NiH4 thin films

Investigation of Catalyst Development from Mg2NiH4 Hydride and Its Application for the CO2 Methanation Reaction

“…Instead, under the CO2 and Ar gas flow, a prolonged small (≈0.1 wt.%) decline of mass and a low intensity exothermic upswing was observed. Therefore, it is clear that the endothermal reaction (8) [28] was simultaneously accompanied by some additional reactions. Kato et al [6] reported that under a CO2 and H2 gas flow over Mg2NiD4 covered with surface oxide layers, the conversion of CO2 to CO (Equation ( 2)) and methane (Equation ( 3)) commenced at 330 °C.…”

“…Instead, under the CO 2 and Ar gas flow, a prolonged small (≈0.1 wt.%) decline of mass and a low intensity exothermic upswing was observed. Therefore, it is clear that the endothermal reaction (8) [28] was simultaneously accompanied by some additional reactions. Kato et al [6] reported that under a CO 2 and H 2 gas flow over Mg 2 NiD 4 covered with surface oxide layers, the conversion of CO 2 to CO (Equation ( 2)) and methane (Equation ( 3)) commenced at 330 • C. The sum of these reactions was exothermic, and, considering that there was some hydrogen released from the Mg 2 NiH 4 methanation of CO/CO 2 , this could explain the lack of an endothermic minimum in the DSC curve.…”

Complex hydrides as thermal energy storage materials: characterisation and thermal decomposition of Na2Mg2NiH6

“…It is particularly interesting that the decomposition pathway of this compound has not been determined considering the attention its analogue, Mg 2 NiH 4 , has received as a hydrogen storage material. 4,13,[35][36][37][38][39][40][41][42][43] In this research, initial studies of the decomposition pathway for Na 2 Mg 2 NiH 6 were carried out by in situ SR-XRD experiments. These experiments allow for the identication of all crystalline species that are present or evolve during decomposition, while simultaneously determining the temperatures at which these processes occur.…”

Optical Tunability and Characterization of Mg–Al, Mg–Ti, and Mg–Ni Alloy Hydrides for Dynamic Color Switching Devices

“…In order to improve upon the kinetic and thermodynamic properties of Mg, alloying has been extensively used to destabilize the hydride phase and increase hydrogen diffusion. Alloying has been attempted with many metals including Co, − Fe, ,− and Mn, , among others, but the most common secondary alloying elements used in the literature are Al, − Ti, ,− and Ni. − These alloys have increased kinetics when compared to pure Mg ,− and were each found to have interesting optical responses upon hydrogenation.…”