CH4->C2H2->C2H4->C2H5OH->CH3CHO->CH3COOH->CH3COONa->CH4
2 CH4=C2H2+3 H2
C2H2+H2=C2H4
C2H4+H2O=C2H5OH
C2H5OH+CuO=Cu+CH3CHO+H2O
CH3CHO+Cu(OH)2=CH3COOH+Cu2O+H2O
CH3COOH + NaOH = CH3COONa + H2O
CH3COONa + NaOH = CH4 + Na2CO3
CH4->C2H2->C2H4->C2H5OH->CH3CHO->CH3COOH->CH3COONa->CH4
2 CH4=C2H2+3 H2
C2H2+H2=C2H4
C2H4+H2O=C2H5OH
C2H5OH+CuO=Cu+CH3CHO+H2O
CH3CHO+Cu(OH)2=CH3COOH+Cu2O+H2O
CH3COOH + NaOH = CH3COONa + H2O
CH3COONa + NaOH = CH4 + Na2CO3