Dehydrogenation of amine-boranes is thermodynamically favourable, making the process attractive for hydrogen storage systems. Ammonia borane has attracted particular interest due to its high weight percent of hydrogen (19.6%). Dehydrogenation occurs in three steps, creating polyamino-boranes and borazines as insoluble side products.  The dehydrogenation reactions are irreversible, which limits the utility of this process for hydrogen storage.