titanium is used to store hydrogen for various applications. the titanium is inside a canister and hydrogen is adsorbed into the titanium. then the temperature is raised to desorb the hydrogen. is the hydrogen in the titanium atomic hydrogen or molecular? if it is atomic then possibly titanium could be used as a hydrogenation catalyst. i tried looking for a reference regarding titanium as a hydrogenation catalyst and it´s activity (less than, equal to, greater than nickle, palladium) and found an extremly complicated phase diagram of the forms of the titanium/hydrogen "alloy" which i could not understand. does anyone have information regarding this matter?