NOVELTY - A hydrogen storage supply system has a raw material storage unit (2) which accommodates a hydrogen supply unit or a hydrogen storage unit, a raw material supply unit (3) for supplying hydrogen to hydrogen storage unit or hydrogen supply unit, a reactor (4), a vapor-liquid separating unit (5) and a reaction material recovering unit (8). The reactor has metal supported catalyst (41) and a heater (43).    USE - Used for storing and supplying hydrogen for hydrogenation of aromatic compounds such as benzene, toluene, xylene, mesitylene, naphthalene, methylnaphthalene, anthracene, biphenyl and phenanthrenes, and dehydrogenation of derivative of aromatic compounds.    ADVANTAGE - The economical hydrogen storage and supply system has excellent stability and efficiency. The hydrogen storage supply system stably and efficiently supplies hydrogen to hydrogenation of the aromatic compound and dehydrogenation of the derivative of the aromatic compound.    DETAILED DESCRIPTION - A hydrogen storage supply system has a raw material storage unit which accommodates a hydrogen supply unit or a hydrogen storage unit, a raw material supply unit for supplying hydrogen to the hydrogen storage unit or the hydrogen supply unit, a reactor, a vapor-liquid separating unit and a reaction material recovering unit. The reactor has an injection nozzle having average spraying particle diameter of 5-1,000 microns which sprays hydrogen in the shape of fog. The reactor has a metal supported catalyst and a heater. The vapor-liquid separation unit condenses the gas obtained from the reactor and separates condensed gas from hydrogen. The reaction material recovering unit recovers the separated hydrogen.    DESCRIPTION OF DRAWING(S) - The figure shows an explanatory drawing of the hydrogen storage and supply system. (Drawing includes non-English language text).    Raw-material storage unit (2)    Raw-material supply unit (3)    Reactor (4)    Vapor-liquid separating unit (5)    Reaction-material recovering unit (8)    Catalyst (41)    Heater (43)