[Chipola]

PhysOrg is reporting on a method of releasing hydrogen from water by oxidizing aluminum in an alloy with gallium. In the presence of water the aluminum oxidizes, leaving aluminum oxide, gallium, and hydrogen gas. The Purdue scientists who discovered the effect think this could help to overcome difficulties with hydrogen storage. Quoting: 'On its own, aluminum will not react with water because it forms a protective skin [of aluminum oxide] when exposed to oxygen. Adding gallium keeps the film from forming, allowing the aluminum to react with oxygen in the water.'"

resumen.
Se esta desarrollando un metodo para liberar oxigeno a partir de la oxidacion de una aleacion de aluminio y galio.
En presencia de agua la aleacion de aluminio se oxida, produciendo oxido de aluminio, galio e hidrogeno.
...en su estado natural el aluminio no reacciona con el agua debido a que se forma una capa protectora de oxido de aluminio al exponerse al oxigeno. Agregando galio, esta capa protectora reacciona con el oxigeno del agua.

http://www.physorg.com/news98556080.html