International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Phys Chem Chem Phys. 2019 Mar 13;21(11):5882-5889. doi: 10.1039/c8cp07445c.
Electrochemical hydrogenation of a carboxylic acid using water as a hydrogen source is an environmentally friendly synthetic process for upgrading bio-based chemicals. We systematically studied electrochemical hydrogenation of non-aromatic carboxylic acid derivatives on anatase TiO2 by a combination of experimental analyses and density functional theory calculations, which for the first time shed light on mechanistic insights for the electrochemical hydrogenation of carboxylic acids. Development of a substrate permeable TiO2 cathode enabled construction of a flow-type electrolyser, i.e., a so-called polymer electrode alcohol synthesis cell (PEAEC) for the continuous synthesis of an alcoholic compound from a carboxylic acid. We demonstrated the highly efficient and selective conversion of oxalic acid to produce glycolic acid, which can be regarded as direct electric power storage into an easily treatable alcoholic compound.
电化学加氢法使用水作为氢源将羧酸还原，是一种环境友好的生物基化学品升级合成工艺。我们通过实验分析和密度泛函理论计算相结合，系统地研究了锐钛矿 TiO2 上非芳香羧酸衍生物的电化学加氢反应，首次揭示了电化学加氢羧酸反应的机理见解。开发了一种底物渗透性 TiO2 阴极，从而构建了一种流动型电解槽，即所谓的聚合物电极醇合成电池（PEAEC），可实现从羧酸连续合成醇类化合物。我们证明了草酸的高效和选择性转化为生成乙醇酸，可将其视为直接电能存储为易于处理的醇类化合物。
