Hydrogen storage schemes

Fig. 15.18. General process scheme for the production of methanol from renewable resources. (Reprinted from S. Stucki, A. Schuler, and M. Constantinescu, Coupled C02 Recovery from the Atmosphere and Water Electrolysis Feasibility of a New Process for Hydrogen Storage, Int. J. Hydrogen Energy, Vol. 20, p. 654, Fig. 1,1995. Reproduced with permission of the International Association for Hydrogen Energy.)...

Figure 3. The scheme of photoelectrochemical cell for hydrogen storage (a) and Auger-spectrum of GaAs surface modified by Pt (b).

Once again the distinction between different t)q)es of chemical hydrogen storage is a bit artificial, as reactions beyond dissociation were already involved in several of the forms described above and notably in the use of hydrides called complex. But generally, any reversible reaction scheme with different amoimts of hydrogen on either side of the equation may be con-... 

The other major technology area necessary for the conversion of transportation vehicles to the use of hydrogen is the on board fuel storage. A number of differing storage techniques have been investigated. To aid in the comparison of the various storage schemes it is necessary to establish a set of criteria for a reference vehicle and its fuel tank. 

Amine-borane adducts have great interest as they are promising candidates for hydrogen storage since evolution of hydrogen is observed when amine-borane adducts are exposed to titanium complexes (Scheme 5.10). 

Scheme 10 Schematic representation of Ru-catalyzed hydrogen storage based on the use of FA or formates...

Bogdanovic describes in the introduction of his paper introducing reversible hydrogen storage in Ti-catalyzed NaAlEU, how it was known that the complex hydride could be synthesized from the elements and also that NaAlIi, will decompose to NaH, Al, and H2 according to a two-step reaction scheme. 

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