Ammonia borane (NH₃BH₃), as a source material for energy generation and hydrogen storage, hasattracted growing interest due to its high hydrogen content. We have investigated the synthesis of ammonia borane from sodium borohydride (NaBH₄) and ammonium chloride (NH4Cl) utilizing a low-temperature process. Fromour results, we obtained a maximum synthetic yield of 98.2% of ammonia borane complex. The diammoniatediborane (DADB) was detected in about 5~10mol% with in the solid ammonia borane by solid-state <sup>11</sup>B-NMRanalysis. The synthesized solid ammonia borane products were studied to characterize hydrogen release uponthermal dehydrogenation.