Fig. 5: Identifications of In5 and In4…In4 on In2O3 for activation of H2 and DMC. | Nature Communications

Fig. 5: Identifications of In5 and In4…In4 on In2O3 for activation of H2 and DMC.

From: Indirect methanol synthesis from CO2 through high-efficient dimethyl carbonate hydrogenation as a bridge below 100°C

Fig. 5

a XPS analysis of In 3d peaks and b EPR spectra of PC-In2O3, PC-In2O3-350 and PC-In2O3-450. c The correlation of CH3OH generation rates and Ea values with the normalized area of EPR for DMC hydrogenation. DRIFTS spectra of d pyridine and e DMC adsorption at room temperature. f In situ DRIFTS spectra for H2 and D2 dissociation on the surface of PC-In2O3 and PC-In2O3-450 at 150 °C. g The influence of pyridine concentrations on the catalytic performance of PC-In2O3 for DMC hydrogenation. h Scheme of spatially intimate Lewis acidic combination of In5 and In4…In4. i H2/D2 isotope effects of PC-In2O3 in DMC hydrogenation. Reaction conditions: catalysts (20 mg), DMC (5 mL), 1 h, 100 °C, and 2 MPa H2/D2.

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