Methanol is industrially prepared by

Methanol is prepared commercially from water gas which is a mixture of carbon monoxide and hydrogen. In this method, water gas is mixed with
its half volume of hydrogen and is passed over heated Cr_2​O_3​−ZnO catalyst at 673 K under high pressure.

$\mathrm{CO}+2{\mathrm{H}}_2 \underset{{\mathrm{Cr}}_2{\mathrm{O}}_3-\mathrm{ZnO}}{\overset{ 673\mathrm{K},\mathrm{highpressure}}{\to }} {\mathrm{CH}}_3\mathrm{OH}$