Highly Efficient Hydrogen Evolution System of Melamine/BH3 without Using Any Catalyst

A highly efficient melamine/BH3 H2 evolution system, which can spontaneously release 6 equiv of H2 from 1 equiv of melamine at room temperature and is capable of releasing further 3 equiv of H2 at higher temperatures, has been developed. The dehydrogenation reaction was verified and studied by 1H and 11B NMR, MALDI-TOF MS analyses, as well as H2 evolution experiments, under different conditions. The reaction products were characterized by elemental analyses, IR, and solid 11B NMR spectroscopic techniques. Studies on the dehydrogenation reaction of BH3 with a model compound o-aminopyridine provide solid experimental evidence for further confirming the spontaneous NH/BH dehydrocoupling reaction.