Titanium(III) hydrazide gels designed for Kubas-type hydrogen storage were synthesized from the reaction between tris(bis(trimethylsilyl)methyl) titanium and anhydrous hydrazine. The materials demonstrate a fully reversible H2 adsorption capacity of 2.63 wt% and 36.7 kg/m3 at 298 K and 143 bar without saturation.  Interaction between the adsorption center and H2 gas was probed by electron paramagnetic resonance.  Computational efforts showed a maximum adsorption of 9.9 wt% rationalized the rising enthalpies and linear isotherms by a new mechanism involving a pressure-induced deformation of the amorphous structure.

Titanium hydrazide gels for Kubas type hydrogen storage: Synthesis and computational efforts to rationalize rising enthalpies and linear isotherms

245th National Meeting (2013)

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