what are methods of preparing methane in laboratory in large scale?
In the laboratory, equal mass of powdered sodium ethanoate and soda-lime are heated in a hard glass test-tube to give methane which is passed through a delivery tube via downward delivery to the bottom of a water bath and collected at the top of an inverted trough.
CH3COONa(s) + NaOH(s) → Na2CO3(s) + CH4(g)