NOVELTY - An apparatus comprises three reactors in cascade. The first two reactors are able to execute a thermocatalytic resolution of ammonia and third reactor (Cr) is a microwave resonator, i.e. an electromagnetic resonance reactor in the microwave range.    USE - For resolution of liquid ammonia into its constituents nitrogen and gas hydrogen (claimed) used for alkaline fuel cells, which supply power for car drive.    ADVANTAGE - The apparatus resolves hydrogen from ammonia in a compact and integral way. The apparatus has two catalytic reactors in cascade to each other followed by a specific microwave resonator performing the dissociation process under the total absence of carbon compounds in the output flow of hydrogen. The flow of gas hydrogen and nitrogen passes through an absorption scrubber and is able to capture any ammonia trace before supplying the gases to alkaline fuel cells. The alkaline fuel cells have a low manufacturing cost and a high-energy output is made feasible by the total absence of carbon compounds. The technology produces a work of about 12,000 kJ/kg NH3 on the shaft of the electric motor associated to the cells.    DETAILED DESCRIPTION - An apparatus comprises three reactors in cascade. The first two reactors are able to execute a thermocatalytic resolution of ammonia and third reactor (Cr) is a microwave resonator, i.e. an electromagnetic resonance reactor in the microwave range. The apparatus further comprises an absorption scrubber to capture any residual ammonia (NH3) trace in the gas flow escaping from the microwave resonator before conveying the flow to the user. The first reactor comprises an outer case, which delimitates an inner space with cylindrical shape, where an insulating tangential-flow diffuser, a hollow cylindrical central body and an armoured electrical resistance, which heats the body from the inside are placed from the outside to the centre. The second reactor comprises an outside mantle, a central duct connected outside to the coupling duct from the output of first reactor, and several overlying catalytic ring partitions, which are coaxially placed around the central duct. The microwave resonator has a guide tube (22) with a transversal emitter (24) and is crossed longitudinally by the dissociating gas flow.    DESCRIPTION OF DRAWING(S) - The figure shows a section view of a microwave guide tube forming the third resolution stage to complete the resolution of residual ammonia.    third reactor (Cr)    collector (21)    guide tube (22)    transversal emitter (24)    output duct. (26)