C2H2<-- CH4 -->CH3CL-->C2H6-->C2H4
2CH₄ ---> C₂H₂ + 3H₂ (t) CH₄ + Cl₂ ---> CH₃Cl + HCl (hv) 2CH₃Cl + 2Na ---> C₂H₆ + 2NaCl C₂H₆ --> C₂H₄ + H₂ (kt=Ni,t)