NOVELTY - The microporous aluminum preparation in which micropores are introduced by metallurgical or mechanical deformation device. Aluminum particles and pre-milled deforming agent particles for micropore formation are combined to form an intermediate microporous composition and are in intimate physical contact achieved by milling of the aluminum particles and the agent. The agent is removed from the composition by melting, sublimation, leaching of washing to render pure microporous aluminum powder. Bare surface of the electropositive aluminum reacts with water to produce hydrogen.    USE - Used for producing hydrogen used in hydrogen fuel cells.    ADVANTAGE - The hydrogen is simply and cost effectively produced by the microporous aluminum. Reaction products obtained during the hydrogen generation are easy to handle and recycle. Simple and low cost microporous aluminum preparation.    DETAILED DESCRIPTION - The microporous aluminum preparation in which micropores are introduced by metallurgical or mechanical deformation device. Aluminum particles and pre-milled deforming agent particles for micropore formation are combined to form an intermediate microporous composition and are in intimate physical contact achieved by milling of the aluminum particles and the agent. The agent is removed from the composition by melting, sublimation, leaching of washing to render pure microporous aluminum powder. Bare surface of the electropositive aluminum reacts with water to produce hydrogen. The aluminum particles and the agent particles are present in a ratio 1000:1-1:1000 by weight and have size of 0.01-100 microns. The agent is citric acid, ice, dry ice, organic waste or short chain organic polymer, NaCl or KCl. INDEPENDENT CLAIMS are included for:    (1) a microporous aluminum;    (2) method for producing hydrogen; and    (3) microporous aluminum system.    DESCRIPTION OF DRAWING(S) - The diagram shows a plot illustrating hydrogen generation from Al-NaCl (50wt%) powder mixtures and from washed-out aluminum powders.