Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen Storage

摘要

On-board storage is a major technical barrier to the use of hydrogen as a transportation fuel.Ammonia-borane (H_3NBH_3,1) has a hydrogen capacity of 19.6 wt%,exceeding that of gasoline and making it an attractive candidate for chemical hydrogen-storage applications.At temperatures up to 100 deg C,solid 1 affords a single equivalent of H_2 and aminoborane oligomers,[H_2NBH_2]_n.While both rate and extent of dehydrogenation are increased in nanoscaffolds and concentrated ionic-liquid solutions of 1,catalysts will be required to meet the demands of transportation-based hydrogen storage.