# Can you get oxygen form silica or alumina?

If I had a lot of silica or alumina, like on the moon, would I be able to split the silica or alumina into aluminium and oxygen/ silicon and oxygen? It doesn't matter how unpractical it is. If there is a way, how can it be done?

• In the Hall-Heroult process, oxygen is produced by electrolysis of $\ce{Al_2O_3}$ – Yunfei Ma Apr 8 '16 at 18:54
• chemistry.stackexchange.com/questions/49098/… – Ivan Neretin Apr 8 '16 at 18:55
• Of course it is possible - that is how we get silicon and aluminum in the first place. On the moon, physical, rather than chemical processes might be more easily accomplished (see - isotope separation with Calutrons). – Jon Custer Apr 8 '16 at 19:07