Production of nuclear hydrogen Nu2 or hydricity by high temperature nuclear reactor

Hydrogen in both gaseous or liquid form is an energy vector also called hydricity. Hydrogen gas in very rare in the atmosphere and in geological sites, thus it must be produced with advanced technological devices, mainly by water splitting. This clean energetic utility can be produced efficiently by dedicated high or very high temperature nuclear reactors of Generation IV, instead of using the traditional methods based on steam reforming of either light hydrocarbons or coal. The advantages are evident due to the high power density of a nuclear power plants and the almost complete lacking of green-house gaseous emissions, heavy metals and radioactive ones, typical of traditional thermoelectric power plants. This method for producing NuH2 is clean, safe and environmental friendly. There are being discussed the main thermochemical and pyrochemical routes for water splitting in H2 and O2, by using at least three designs of nuclear reactors of Gen IV, that are described in some details.