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Table 1 Metal dispersion D, the amounts of released H2 and CO per gram of the Ga3Ni2 catalyst determined from TPD experiments, the reaction rate \( {r}_{CO_2} \), and the CO2 turnover frequency (TOF) at 500 °C of the catalyst reduced at two different temperatures of 300 or 600 °C, respectively

From: The effect of surface oxidation on the catalytic properties of Ga3Ni2 intermetallic compound for carbon dioxide reduction

Reduction T

D (%)

H2–TPD (μmol H2 g−1)

CO–TPD (μmol CO g−1)

\( {r}_{CO_2} \) at 500 °C (μmol CO2 g−1 s−1)

TOF at 500 °C (s−1)

300 °C

0.06 ± 0.01

1.8 ± 0.2

0.07 ± 0.01

1.4 ± 0.15

0.42 ± 0.04

600 °C

0.11 ± 0.01

3.2 ± 0.2

0.12 ± 0.01

2.2 ± 0.15

0.39 ± 0.04