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Efficient carbon dioxide hydrogenation to formic acid with buffering ionic liquids

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  • Andreas Weilhard

    (University of Nottingham)

  • Stephen P. Argent

    (University of Nottingham)

  • Victor Sans

    (University of Nottingham
    Universitat Jaume I)

Abstract

The efficient transformation of CO2 into chemicals and fuels is a key challenge for the decarbonisation of the synthetic production chain. Formic acid (FA) represents the first product of CO2 hydrogenation and can be a precursor of higher added value products or employed as a hydrogen storage vector. Bases are typically required to overcome thermodynamic barriers in the synthesis of FA, generating waste and requiring post-processing of the formate salts. The employment of buffers can overcome these limitations, but their catalytic performance has so far been modest. Here, we present a methodology utilising IL as buffers to catalytically transform CO2 into FA with very high efficiency and comparable performance to the base-assisted systems. The combination of multifunctional basic ionic liquids and catalyst design enables the synthesis of FA with very high catalytic efficiency in TONs of >8*105 and TOFs > 2.1*104 h−1.

Suggested Citation

  • Andreas Weilhard & Stephen P. Argent & Victor Sans, 2021. "Efficient carbon dioxide hydrogenation to formic acid with buffering ionic liquids," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20291-0
    DOI: 10.1038/s41467-020-20291-0
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    Cited by:

    1. Samira Ebrahimian & Sankar Bhattacharya, 2024. "Direct CO 2 Hydrogenation over Bifunctional Catalysts to Produce Dimethyl Ether—A Review," Energies, MDPI, vol. 17(15), pages 1-50, July.

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