Hydrogen storage with chemical hydrides: catalytic methods for regeneration

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Dwindling petrochemical reserves and increased public concern over the greenhouse gas emissions are exerting pressure on governments, industry and academics to find alternative methods for the world to meet its demands for energy. These needs will be met by different sources, including solar, wind and hydroelectric energy. However, one of the most important and most polluting technologies is transportation, which requires that the energy from sun, wind and water power be efficiently stored and then released. One of the most promising vehicles for portable energy to be identified this century is ammonia borane. Generated entirely from elements in the first row of the periodic table, it is also light and hydrogen rich (6 hydrogen atoms of a total of 8 atoms). The relative weight of hydrogen is among the highest of the hydrogen carriers developed to date (ca. 20%). Hydrolytic, thermal, photochemical and catalytic methods for the release of hydrogen have been developed.