Effect of cathode material on electrochemical reduction of levulinic acid to γ-valerolactone and valeric acid in aqueous and organic media

Burmakina, Galina V.; Zimonin, Dmitry V.; Kenova, Tatyana A.; Verpekin, Victor V.; Sychev, Valentin V.; Zos'ko, Nikolay A.; Taran, Oxana P.

doi:10.1016/j.crgsc.2023.100379

Current Research in Green and Sustainable Chemistry

2023

DOI: 10.1016/j.crgsc.2023.100379

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Effect of cathode material on electrochemical reduction of levulinic acid to γ-valerolactone and valeric acid in aqueous and organic media

Galina V. Burmakina,

Dmitry V. Zimonin,

Tatyana A. Kenova

et al.

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2024

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A Comparative Study of Electrochemical Reduction of Levulinic Acid on Various Electrodes in Organic Solvents

Burmakina,

Zimonin,

Verpekin

et al. 2024

ChemPhysChem

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Studies on the electrochemical hydrogenation (ECH) of levulinic acid (LA) to valeric acid (VA) or γ‐valerolactone (GVL) have mainly focused on the electroreduction of LA in acidic aqueous solutions. However, the narrow range of applied potentials has hindered understanding of some mechanistic aspects of LA electrochemical conversion. Earlier, we discovered that employing proton‐deficient non‐aqueous reaction media provides more comprehensive insights into the mechanism of LA electrochemical reduction. Here, we conducted further investigations into the LA electroreduction process using cyclic voltammetry in various organic solvents on a Pt electrode and on various electrode materials in acetonitrile, both with and without the addition of proton donors. The products of the ECH processes were identified using HPLC. The solvent nature, the presence of proton donors, the electrode material, and the applied potential strongly influence the LA electroreduction process. This study reveals that LA, in the presence proton donors, can undergo electroreduction through different pathways, depending on the difference (ΔE1/2) between the reduction half‐wave potential of protons and LA. When the difference is large, the LA reduction is incomplete and the formation of GVL is observed. Under the close reduction potentials of protons and LA, LA can be completely reduced to VA.

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A Comparative Study of Electrochemical Reduction of Levulinic Acid on Various Electrodes in Organic Solvents

Burmakina,

Zimonin,

Verpekin

et al. 2024

ChemPhysChem

View full text Add to dashboard Cite

show abstract

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Effect of cathode material on electrochemical reduction of levulinic acid to γ-valerolactone and valeric acid in aqueous and organic media

Cited by 1 publication

References 35 publications

A Comparative Study of Electrochemical Reduction of Levulinic Acid on Various Electrodes in Organic Solvents

A Comparative Study of Electrochemical Reduction of Levulinic Acid on Various Electrodes in Organic Solvents

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