New black indium oxide—tandem photothermal CO2-H2 methanol selective catalyst

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Abstract

It has long been known that the thermal catalyst Cu/ZnO/Al2O3(CZA) can enable remarkable catalytic performance towards CO2 hydrogenation for the reverse water-gas shift (RWGS) and methanol synthesis reactions. However, owing to the direct competition between these reactions, high pressure and high hydrogen concentration (≥75%) are required to shift the thermodynamic equilibrium towards methanol synthesis. Herein, a new black indium oxide with photothermal catalytic activity is successfully prepared, and it facilitates a tandem synthesis of methanol at a low hydrogen concentration (50%) and ambient pressure by directly using by-product CO as feedstock. The methanol selectivities achieve 33.24% and 49.23% at low and high hydrogen concentrations, respectively.

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Zhang, Z., Mao, C., Meira, D. M., Duchesne, P. N., Tountas, A. A., Li, Z., … Ozin, G. A. (2022). New black indium oxide—tandem photothermal CO2-H2 methanol selective catalyst. Nature Communications, 13(1). https://doi.org/10.1038/s41467-022-29222-7

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