Increase Methanol Yield from CO + H2 Reaction

[L²Cc]

Methanol, CH3OH, is synthesised on a commercial scale by pumping a mixture of carbon monoxide and hydrogen through a reaction vessel containing a mixture of CR2O3 and ZnO. In the reaction vessel, equilibrium is reached according to the equation CO + 2H2 CH3OH

Suggest two methods whereby the equilibium yield of methanol from this process could be increased.

Please help me, I've been stuck on this problem for 45 minutes!

 

[chemisttree]

Use LeChat's principle.