Table 1.

Real mean surface residence times for ICH $\left({\overline{\tau }}_{0\text{\_}\mathrm{I}CH}\right)$ and ICO $\left({\overline{\tau }}_{0\text{\_}\mathrm{I}CO}\right)$, and activation energies for CH₄ (E _CH4) and CO (E _CO) formation and adsorbed ∗COs (E∗COs) and HCOO^∗ (E _HCOO∗) conversions in CO₂ reduction at 533–573 K

Temp. (K)	${\overline{\tau }}_{\mathbf{0}\text{\_}\mathbf{ICH}}$ (s)	${\overline{\tau }}_{\mathbf{0}\text{\_}\mathbf{ICO}}$ (s)	E CH4 (kJ  mol −1)	E CO (kJ  mol −1)	E∗COs (kJ  mol −1)	E HCOO∗(kJ  mol −1)
533	134	107
543	92	85	75	53	73	52
563	49	57
573	41	55

Uncertainties in activation energies are ±2 kJ mol⁻¹