CH3CH2COOH - C2H6-C2H4-C2H5OH-CO2
CH3CH2COOH -t-> C2H6 + CO2 C2H6 -t, Pt-> C2H4 + H2 C2H4 + H2O -H+-> C2H5OH C2H5OH + 3O2 -t-> 2CO2 + 3H2O