Hydrogenation of oxalic acid using light-assisted water electrolysis for the production of an alcoholic compound

Sho Kitano, Miho Yamauchi, Shinichi Hata, Ryota Watanabe, Masaaki Sadakiyo

    研究成果: Contribution to journalArticle査読

    13 被引用数 (Scopus)

    抄録

    We demonstrate the production of glycolic acid, an industrially important alcoholic compound, via the electrochemical reduction of oxalic acid, which is procurable from biomass, and electro-oxidation of water with the help of renewable light energy for the first time. In principle, this new synthesis system is achievable while minimizing the consumption of fossil resources. We built a precious-metal free electrosynthesis system by employing a TiO2 cathode for oxalic acid reduction and a WO3 photoanode for water oxidation. The alcohol production proceeds during the application of electric power above 2.1 V in the dark. Notably, UV-visible light irradiation of the WO3 photoanode enables glycolic acid electrosynthesis above 0.5 V, which is lower (by 0.6 V) than the theoretical bias, i.e., 1.1 V. Glycolic acid electrosynthesis with an 80% high Faradaic efficiency was achieved on applying a bias of 1.5 V under UV-visible irradiation (λ > 300 nm).

    本文言語英語
    ページ(範囲)3700-3706
    ページ数7
    ジャーナルGreen Chemistry
    18
    13
    DOI
    出版ステータス出版済み - 2016

    All Science Journal Classification (ASJC) codes

    • 環境化学
    • 汚染

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