Al + H20 = Al - H2O I believe it becomes a hydrate.
Al + H2O -- NR aluminium will not react with water, so no product formed.
Hydrogen. This only happens after the skin that forms on the aluminum is corroded over time by the water. (the skin is just oxidized aluminum). If you add Gallium to the aluminum, the hydrogen is developed faster because the oxidation process is prevented and the skin won't form. In other words, the hydrogen gets produced right away. Purdue just proved this last year. See following reference.
Aluminium powder heated in steam produces hydrogen and aluminium oxide. The reaction is relatively slow because of the existing strong aluminium oxide layer on the metal, and the build-up of even more oxide during the reaction. 2 Al + 3H2O ------------ Al2O3 + 3H2
