Ammonia (chemical formula NH 3) cannot be used as a fuel ‘as is’, because it is stable and quite inert. To turn it into a fuel requires that it be ‘cracked’, that is, broken down into its ...

Figure 1: Structural study of solid ammonia under pressure. (a) Representative room temperature X-ray diffraction patterns at various pressure acquired at HPCAT beamline (λ =0.4125 Å).