Comparative study about hydrogen sorption in sponge and powder titanium

Full text: The hydrogen may be stored as a compressed gas or a cryogenic liquid, but neither method appears to be practical for many applications in which hydrogen use would otherwise be attractive. For example, gaseous storage of stationary fuel is not feasible because of the large volume or weight of the storage vessels. Liquid hydrogen could be used extensively but the liquefaction process is relatively expensive. The hydrogen can be stored for a long term with a high separation factor, like solid metal hydride. Using hydride-forming metals and intermetallic compounds, for example, recovery, purification and storage of heavy isotopes from tritium containing system, can solve many problems arising in the nuclear-fuel cycle. The paper presents a comparative study about hydrogen sorption on two titanium structures: powder and sponge. The characterization by X-Ray diffraction of that structures, before and after sorption process, is also presented. (authors)