Table 1 Energy demands for the synthesis of \(\text {CO}_2\)-based methane and hydrogen

Hydrogen energy demand \(\frac{\text {kJ}}{\text {mol}_{\text {H}_2}}\)

286 \(^\text{a}\) (*4=1144)

379 \(^\text{c}\) (*4=1516)

286 \(^\text{a}\)

379 \(^\text{c}\)

\(\text {CO}_2\) capture energy demand \(\frac{\text {kJ}}{\text {mol}_{\text {CO}_2}}\)

\(20\) \(^\text{b}\)

364 \(^\text{d}\)

N.A.

N.A.

Total energy demand \(\frac{\text {kJ}}{\text {mol}_{\text {CH}_4}}\)

1164

1880

286

379

Combustion energy \(\frac{\text {kJ}}{\text {mol}_{\text {CH}_4}}\)

890 (HHV)

801 (LHV)

286 (HHV)

240 (LHV)

Intensity \(\frac{\text {MW}_{\text {in}}}{\text {MW}_{\text {out}}}\)

1.3

2.4

1

1.6