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<p>Catalytic hydrogenation of carbonyl compounds is widely used in chemical manufacturing and biomass refining, but current thermocatalytic processes require elevated temperatures, high-pressure H<sub>2</sub> and expensive catalysts. Here we demonstrate an electroreduction of carbonyl compounds over Fe/Fe<sub>2</sub>O<sub>3</sub> interfaces in Fe/Fe<sub>2</sub>O<sub>3</sub> nanoarrays (Fe/Fe<sub>2</sub>O<sub>3</sub> NAs), where Fe and Fe<sub>2</sub>O<sub>3</sub> species synergistically accelerate the kinetics of acetone hydrogenation by promoting acetone adsorption and H* formation. With acetone as the probe molecule, an isopropanol partial current density of 1.6 A cm<sup>−2</sup> and ~100% selectivity are achieved in 1 M KOH aqueous solution. Even in a large-scale, two-electrode electrolyser, Fe/Fe<sub>2</sub>O<sub>3</sub> NAs stably deliver an acetone conversion of &gt;99%, an isopropanol selectivity of 100%, and an isopropanol production rate of 21.6 g g<sub>cat</sub><sup>−1</sup> h<sup>−1</sup> at 0.2 A cm<sup>−2</sup> over a 1,000-h operation. Moreover, Fe/Fe<sub>2</sub>O<sub>3</sub> NAs were applied in the electrochemical hydrogenation of various carbonyl compounds to corresponding alcohols with high conversion rates and selectivities.</p><p></p>

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Efficient electroreduction of carbonyl compounds to alcohols over Fe/Fe2O3 interfaces

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Jin Lin,
  • Zhenpeng Liu,
  • Haofei Wu,
  • Zhiqi Wang,
  • Guangqiu Wang,
  • Ju Bu,
  • Yanan Wang,
  • Pan Liu,
  • Junjie Wang,
  • Jian Zhang

摘要

Catalytic hydrogenation of carbonyl compounds is widely used in chemical manufacturing and biomass refining, but current thermocatalytic processes require elevated temperatures, high-pressure H2 and expensive catalysts. Here we demonstrate an electroreduction of carbonyl compounds over Fe/Fe2O3 interfaces in Fe/Fe2O3 nanoarrays (Fe/Fe2O3 NAs), where Fe and Fe2O3 species synergistically accelerate the kinetics of acetone hydrogenation by promoting acetone adsorption and H* formation. With acetone as the probe molecule, an isopropanol partial current density of 1.6 A cm−2 and ~100% selectivity are achieved in 1 M KOH aqueous solution. Even in a large-scale, two-electrode electrolyser, Fe/Fe2O3 NAs stably deliver an acetone conversion of >99%, an isopropanol selectivity of 100%, and an isopropanol production rate of 21.6 g gcat−1 h−1 at 0.2 A cm−2 over a 1,000-h operation. Moreover, Fe/Fe2O3 NAs were applied in the electrochemical hydrogenation of various carbonyl compounds to corresponding alcohols with high conversion rates and selectivities.