Making oxygen from iron oxide (aka rust) with sodium chloride?
This reaction isn't feasible and won't likely occur. 

Why not?

Rust and Salt are very stable, and happy with their current state. You can see this better by looking at each product.

Rust forms from Iron and Oxygen


  4Fe + 3O2 → 2Fe2O3


Salt is formed from Sodium and Chlorine


  Na + Cl → NaCl


The formation of both of these products is very favorable because both molecules want to bond together to complete their valence shells.



They do not want to break their bonds, and doing so is possible but requires a lot of energy making it unfavorable. This is why we don't see salt or rust breaking down into its elements without a high amount of energy. This all applies for the overall reaction. All the reactants are already happy and don't want to break down making this reaction, possible, but not feasible due to the high amount of energy that it takes.