2005, Volume 8, Issue 15+16
Comparative Study About Hydrogen Sorption in Sponge and Powder Titanium
1 National Institute for Cryogenics and Isotopes Technologies, Rm. Valcea, Romania
2 National Institute of Cryogenics & Isotopic Technologies, Rm. Valcea
3 Pitesti University, Advanced Materials Research Centre
Currently, hydrogen may be stored as a compressed gas or a cryogenic liquid. 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 use 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 rntermetalhc compounds for example, recovery, purification and storage of heavy isotopes in tritzurn 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 Also, it is presented the characterization, by X-Ray diffraction, of two structures, before and after sorption process. From results it is obtain that sorption method is efficient for both samples. Kinetic curves indicating that sorption rate for titanium powder is lower than sponge titanium. This is the effect of reaction surface, which is greater for powder titanium. Sorption capacity for hydrogen is lower for powder titanium for identical experimental conditions. The difference between storage capacities could be explained by activation temperature which it was lower for powder titanium comparatively with sponge.
Titanium, sponge powder, sorption, hydride etc.
Tag search Titanium sponge powder sorption hydride etc