1. 2CH4--(1000℃)--> C2H2+3H2
C2H2+H2-->CH2=CH2
CH2=CH2+H2O--(H+)-->CH3-CH2-OH
2CH3-CH2-OH+2K-->2CH3-CH2-OK+H2
2. CH3-CH2-CH2-OH+CH3-CH2-CH2-CH2-OH
--(H2SO4, t<150°)--> CH3-CH2-C(O)- CH2-CH2-CH2-CH3+H2O
3. CH3-CH2-CH2-CH2-CH2-CH2-OH--(H2SO4, t>150°)--> CH3-CH2-CH2-CH2-CH=CH2+H2O