Thermal decomposition of LiAlH sub(4 chemically mixed with Lithium amide and transition metal chlorides)

Thermogravimetric analysis of LiAlH sub(4 chemically mixed with different additives is reported for the application of hydrogen storage. Here, we illustrated the dehydrogenation properties of combined LiAlH) sub(4)/LiNH sub(2 (2:1) mixture and LiAlH) sub(4) wet-doped with different transition metals (Sc, Ti, and V) in their chloride forms. Thermal gravimetric analysis of LiAlH sub(4/LiNH) sub(2) system released [not, vert, similar]7.9 wt.% of hydrogen in three decomposition steps at temperatures between 75 and 280 degree C under a heating ramp of 5 degree C min super(-1. The LiAlH) sub(4) doped with transition metals showed the decrease of decomposition temperature down to 30-40 degree C for both 1st and 2nd dehydrogenation steps as compared to as-received LiAlH sub(4. The catalytic activity in lowering the dehydrogenation temperature of LiAlH) sub(4) doped with transition metals increases in the order of pure LiAlH sub(4 V Ti Sc. The X-ray diffraction analysis, field emission scanning electron microscopy, and Fourier transformation infra-red spectroscopy techniques were carried out in support of the thermogravimetric results.)