TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Unit: The hydrogen separation unit has a hydrogen separation membrane, which separates hydrogen discharging medium, hydrogen storing medium, and hydrogen in gaseous state. The hydrogen separation unit is a cooler, which cools the medium and hydrogen. The flow hole turns into release opening or supply port using a switching unit, which alternately changes each inflow and outflow of medium. The heat separation unit, flow path, catalyst layer, spacer, hydrogen flow-path layer and cooler are sequentially formed at a high-heat conduction substrate (2). Preferred Apparatus: The hydrogen storage-supply apparatus has a fuel storage layer, a fuel injection layer, hydrogen separation membrane and catalyst layer. Preferred Medium: The hydrogen storing medium and hydrogen discharging medium are liquid. Preferred Path: The flow path has several pattern having planar shape, formed at surface of high heat conduction substrate. The flow path has pattern of fuel injection portion, reaction portion and diffusion portion. The reaction portion has pattern of blocking layer of medium circulation. The flow path has width and interval of 0.1-1000 mum. Preferred Substrate: The high heat conduction substrate is a clad plate having aluminum layer formed at aluminum or non-aluminum surface. Preferred Pore: The surface pore of hydrogen storage-supply apparatus is filled with alumina, zinc oxide, silica and/or zirconium oxide.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Layer: The catalyst layer is a porous membrane. The catalyst layer consists a metal catalyst chosen from nickel, palladium, platinum, rhodium, iridium, ruthenium, molybdenum, rhenium, tungsten, vanadium, osmium, chromium, cobalt, iron, alumina, zinc oxide, silica, zirconium oxide and diatomaceous earth.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Medium: The hydrogen discharging medium is acetone, benzene, toluene, xylene, mesitylene, naphthalene, methylphthalene, anthracene, biphenyl, phenanthrene and their alkyl substituted products.