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. 2018 Dec 27;7:F1000 Faculty Rev-1981. [Version 1] doi: 10.12688/f1000research.16059.1

Table 2. Coupled reactions resulting from the activities of CODH enzymes, with the molar free energy of reaction.

Product Reaction
Reactions from CO
ΔG 0 a,
kJ mol CO −1
Formate CO + H 2O à HCOO + H + −16
Hydrogen CO + H 2O à H 2 + CO 2 −20
Ethanol 6CO + 3H 2O à CH 3CH 2OH + 4CO 2 −37
n-Butanol 12CO + 5H 2O à CH 3(CH 2) 3OH + 8CO 2 −40
Acetate 4CO + 2H 2O à CH 3COO + H + + 2CO 2 −44
Butyrate 10CO + 4H 2 à CH 3(CH 2)2COO + H + + 6CO 2 −44
Methane 4CO + 2H 2O à CH 4 + 3CO 2 −53
Reactions from H 2/CO
Methanol CO + 2H 2 à CH 3OH −39
Acetate 2CO + 2H 2 à CH 3COO + H + −67
Ethanol 2CO + 4H 2 à CH 3CH 2OH + H 2O −72
Butyrate 4CO + 6H 2 à CH 3(CH 2) 2COO + H + + 2H 2O −80
n-Butanol 4CO + 8H 2 à CH 3(CH 2) 3OH + 3H 2O −81
Methane CO + 3H 2 à CH 4 + H 2O −151

aΔG 0 values at standard temperature and pressure.