# Converting AlCl3 to Al2O3

Since oxygen is more electronegative than chlorine, if I introduce $$\ce{O2}$$ gas to $$\ce{AlCl3}$$ and apply some heat, will the chlorine be replaced by oxygen, resulting in $$\ce{Al2O3}$$ or $$\ce{Al(ClO2)3}$$, then evolving the remaining $$\ce{Cl2}$$ into the air? I suspect not, but why?

Is there a standard way of converting $$\ce{AlCl3}$$ to $$\ce{Al2O3}$$?

• You probably can, but it would make little sense; industrially, it's the other way around as aluminium(III) oxide is easily available in large quantities. You can hydrolyze $\ce{AlCl3}$ to $\ce{Al(OH)3}$ and calcine it above 600 °C to eliminate water and what's left would be quite pure $\ce{Al2O3}.$ – andselisk Sep 11 at 17:50
• Thanks @andselisk. Though it makes little sense in the current world we live in, my motivation behind this question was imagining a how to create a chlorite in a world without electricity (no electrolysis) – R Dev Sep 11 at 18:02