Hydrothermal Conversion of CO₂ into Formic Acid with Zinc and Copper Powders under Low Temperature

Abstract

Possible catalytic activity of different metals in hydrothermal reduction of CO2 into formic acid with Zn was investigated under low temperatures. Among the several catalysts (Cu, Fe and Sn) were used, Cu shows the best catalytic activity for the formic acid production. The formic acid yield is as high as 61% under hydrothermal condition. XRD analysis was also carried out to investigate the possible role of reactants.

Recent advances in CO2 reduction with renewable reductants under hydrothermal conditions: towards efficient and net carbon benefit CO2 conversion

“…7d). 77 Wang et al 78 investigated the catalytic activity of various metals (Cu, Fe, Sn) in the hydrothermal reduction of CO 2 using Zn powder. Copper demonstrated the highest catalytic activity for formic acid production, achieving a yield of up to 61%.…”

H2‐free Synthesis of Aromatic, Cyclic and Linear Oxygenates from CO2

“…C 2 products.I t should be noted that other relatively Earth-abundantm etals with low redox potential, such as zinc, are also useful catalysts for CO 2 reduction. [29,30] Low-reduction-potential metalsh ave been combined with other catalytic substances, particularly nickel [31,32] and copper, [29,33,34] to enhancer eactionk inetics and yields. Additionally,r educing agentss uch as glycerol, [35] biomass derivatives [36] and microalgae [37] have been effective in converting CO 2 to HCOOH.…”