CH4 -> C -> C2H6 -> C2H5CL -> C4H10 -> CO2
CH4-(Гидролиз)->C+2H2 2C+3H2-(кат,t)->C2H6 C2H6+Cl2-(свет)->C2H5Cl+HCI 2Na+C2H5CI-(сплав,t)->C4H10+2NaCl 2C4H10+13 O2->8CO2+10H2O