Hydrogen energy is an energy carrier , alternative and renewable source of energy in world. However, hydrogen energy is facing many problem such as high capacity, good kinetics, thermodynamics, controllable reversibility. TiO2,TiF4 TiAl and TiCl3 codoped sodium alante ( NaAlH4 ) were synthesized for Hydrogen storage properties and mechanisms. Samples were prepared using ball milling in glove box under argon atmosphere. All catalyst is used for the dehydrogenation of NaAlH4 at 250o C and characteriztion by XRD. Sodium alanate was appeared in Tetragonal structure with lattice constant a=b=5.02 and c=11.34. NaAlH4 is completely converted in Na3AlH6 at 250oC which is having cubic structure with lattice constant a = b = c = 7. 755. Desorption for all P- C-T isotherm of NaAlH4 doped with catalyst were calculated using dynamic seivert type apparatus in 100o C to 250o C range of temperatures. The amount of hydrogen in sodium alanate was desorbed between 3.8 and 5.2 wt % in various catylist.

Keywords : Sodium Alanate, Complex Hydrides, Catalyst, XRD and Seviert Type Apparatus for PCT.