(X) 2CH4 $\rightarrow$ CH$\equiv$CH (A) +3H2 (điều kiện: 1500oC)C2H2 + H2 $\rightarrow$ C2H4 (B) (xúc tác: Pd/PbCO3, to)
C2H4 + H2O $\rightarrow$ C2H5OH (C) (xúc tác: H+, to)
C2H2 + H2O $\rightarrow$ CH3CHO (D) (xúc tác: Hg+, to)
CH3CHO + $\frac{1}{2}$O2 $\rightarrow$ CH3COOH (E) (xúc tác: Mn2+, to)