Synergetic NH3 absorption properties of the NaBH4–LiBH4 mixed system

Abstract

NaBH₄ does not absorb NH₃ below 100 kPa but transforms into a liquid state after NH₃ absorption. On the other hand, LiBH₄ absorbs NH₃ at pressures lower than 100 kPa. Interestingly, mixed borohydrides absorbed NH₃ at low pressures and were liquefied above 100 kPa due to a synergetic phenomenon. The kinematic viscosity of the liquefied state was in situ analyzed during NH₃ absorption.