Fuel Processors Based on Alternative Fuels

Ammonia hydride generators are relatively simple systems [104]. Ammonia was fed into the lithium aluminium hydride reactor and hydrogen was generated until a pressure equal to the vapour pressure of ammonia had built up. The fuel cell connected to the system (not shown here) consumed the hydrogen, which decreased the pressure. This caused the ammonia to flow into the reactor again. An ammonia getter had to be placed downstream of the reactor to remove traces of unconverted ammonia. While the ammonia reservoirs could be exchanged, the reactor was of course exhausted when all of the lithium aluminium hydride was consumed. 

Ammonia, 145 g, was stored in the reservoir, while the fresh reactor contained 324 g lithium aluminium hydride. The total weight of the system amounted to 830 g and produced 400 Wh energy. 

---