Question

How to remove of hydrogen to methane

Answer 1

in presence of sunlight kept

methane and chlorine it's hydrogen is removed by chlorine

ch4+2cl2_____ccl4+2h2

Answer 2

In steam-methane reforming, methane reacts with steam under 3–25 bar pressure (1 bar = 14.5 psi) in the presence of a catalyst to produce hydrogen, carbon monoxide, and a relatively small amount of carbon dioxide. Steam reforming is endothermic—that is, heat must be supplied to the process for the reaction to proceed.

hope this is helpful to us.