| 초록 |
The production of useful chemicals by electrochemical reduction of CO2 is one of the current challenges. ZnC2O4 is formed from CO2, and then oxalic acid obtained by various process such as acid treatment and extraction. This process has the advantage of producing oxalic acid with high efficiency without any by-products. However, it is difficult to secure economic feasibility because separation/extraction is expensive and requires strong acid and heat. In addition, oxalic acid is not high in demand and price, so it is necessary to convert to high value-added chemicals to increase economic efficiency. In this study, we propose easy separation of ZnC2O4 to oxalate and conversion of oxalate into glycolic acid, which is a higher value-added material. ZnC2O4 was chemically separated into Zn ion and oxalate, and the oxalate was electrochemically converted to glycolic acid. Electrochemical reduction for glycolic acid was performed by using TiO2 nanotubes (TNTs) cathode prepared by anodization method, and products were analyzed by HPLC. |
