Isothermal Hydrogenation Kinetics Study of Magnesium Hydride with TiH2 Additive

摘要

Detailed absorption kinetics studies of magnesium hydridewith Ti-based additive are still unavailable, even thoughsuch material has been demonstrated to have a muchfaster hydrogenation/dehydrogenation rate. Moreover,thermal effect during hydrogenation process ofmagnesium-based materials is usually neglected inprevious studies, which could render the analysisinaccurate. In this work, both copper and graphite havebeen used as thermal ballast to minimize the thermaleffect. Absorption kinetics of ball-milled magnesiumhydride with TiH2 additive at low temperatures areexamined via a Sieverts type apparatus. Results show thatgraphite could effectively minimize the thermal effect.