Product of the given reaction is ${\mathrm{CH}}_4+{\mathrm{O}}_2\underset{100 \mathrm{atm}}{\overset{\mathrm{Cu}/523 \mathrm{K}}{\to }}$

 2CH₄​+O₂​$\underset{100\mathrm{atm}}{\overset{\mathrm{Cu}/523\mathrm{K}}{\to }}$​2CH₃​OH 

When a mixture of methane and oxygen is passed through copper tubes at 523K and 100 atm, Methyl alcohol is produced.
It is an example of controlled oxidation.