scholarly journals Selective electrochemical reduction of CO2 to formic acid in gas phase reactor with by-product recirculation

2021 ◽  
Author(s):  
Barbara Thijs ◽  
Jan Rongé ◽  
Johan Martens
Keyword(s):  
Formic Acid ◽  
Electrochemical Reduction ◽  
Gas Phase ◽  
Chemical Engineering ◽  
Reduction Of Co2 ◽  
By Products ◽  
Engineering Concept

Recirculation is a chemical engineering concept generally applied to enhance the conversion of reagents. In common applications, by-products are removed together with the desired products and only the unconverted feed...

Continuous Semi-Micro Reactor Prototype for the Electrochemical Reduction of CO2 into Formic Acid

2020 ◽  
Vol 59 (5) ◽  
pp. 1737-1745 ◽  
Author(s):  
Rupam Sinha ◽  
Agam Bisht ◽  
Saptak Rarotra ◽  
Tapas K. Mandal
Keyword(s):  
Formic Acid ◽  
Electrochemical Reduction ◽  
Reduction Of Co2 ◽  
Micro Reactor

scholarly journals Low-Overpotential Electrochemical Reduction of CO2 to Formic Acid on Surface-Modified Doped Tin Oxide Pellets

2019 ◽  
Author(s):  
Emmanuel Abdul ◽  
Jason Pitts ◽  
Deepak Rajput ◽  
Shankar Rananavare
Keyword(s):  
Formic Acid ◽  
Electrochemical Reduction ◽  
Current Density ◽  
Tin Oxide ◽  
Aqueous Media ◽  
Oxide Nanoparticles ◽  
Faradaic Efficiency ◽  
Electrode Potentials ◽  
Tin Oxide Nanoparticles ◽  
Reduction Of Co2

Gas sensors fabricated with antimony doped tin oxide (ATO) nanomaterials exhibit remarkable sensitivity for detecting oxidizing and reducing gases. This study highlights the enhanced selectivity and stability of the porous ATO nanomaterial electrode made for electrochemical reduction of CO2 in aqueous media. During electrochemical reduction, these electrodes prepared from compressed powders tend to crumble within a few hours in aqueous media. To overcome this electrode disintegration effect, we modified the surface of the doped tin-Oxide nanoparticles with Nafion and a dipodal silane (1,2-Bis(triethoxysilyl)ethane). The electrode characterization studies include Cyclic Voltammetry (CV), and Electrochemical Impedance Spectroscopy (EIS). Scanning electron microscopic investigation of electrode surface morphology and roughness before and after electrochemical CO2 reduction for derivatized and underivatized electrode revealed lower surface roughness for former than the latter.The derivatized electrodes allowed CO2 electrochemical reduction at low overpotentials and high current density without any electrode crumbling over more than 24 hours of continuous operation. Formate/formic acid and methanol were the major products of reduction at electrode potentials ranging from -0.4 to -1.0V vs. RHE in the CO2 saturated 0.1M KHCO3 electrolyte. Higher current density and Faradaic Efficiency of formic acid was observed when compared to planar tin electrode materials and tin oxide nanoparticles deposited on FTO glass.

scholarly journals Arc Plasma Deposited Copper and Gold Nanoparticles on FTO Substrate for Electrochemical Reduction of CO2

2019 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
High Efficiency ◽  
Plasma Deposition ◽  
Arc Plasma ◽  
Faradaic Efficiency ◽  
Electro Deposition ◽  
Electro Catalysis ◽  
Reduction Of Co2

A composite of copper and gold nanoparticles was deposited using arc plasma deposition on the conductive FTO substrate for the electrochemical reduction of CO2 . The use of arc plasma deposition system allows the nanoparticles to be implanted onto the substrate as opposed to the commonly used methods of vacuum deposition or electro deposition. This unique structure reduced the CO2 to produce formic acid with up to 60% faradaic efficiency. Copper and gold nanoparticles have never previously been reported to produce formic acid with such high efficiency, suggesting that the co-deposition technique of implanted nanoparticles can provide an interesting future avenue in the field of electrochemical reduction of CO2 . The surface analysis of the electrodes is presented here along with potential dependent faradaic efficiency of the electro catalysis.

scholarly journals High-Pressure Electrochemical Reduction of CO2 to Formic Acid/Formate: Effect of pH on the Downstream Separation Process and Economics

2019 ◽  
Vol 58 (51) ◽  
pp. 22718-22740 ◽  
Author(s):  
Mahinder Ramdin ◽  
Andrew R. T. Morrison ◽  
Mariette de Groen ◽  
Rien van Haperen ◽  
Robert de Kler ◽  
...  
Keyword(s):  
High Pressure ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
Separation Process ◽  
Effect Of Ph ◽  
Reduction Of Co2

scholarly journals Electrochemical reduction of CO2 to Formic Acid on Pb-Sn Alloy Cathode

2020 ◽  
Vol 823 ◽  
pp. 012053
Author(s):  
Pramujo Widiatmoko ◽  
Isdiriayani Nurdin ◽  
Hary Devianto ◽  
Budi Prakarsa ◽  
Henry Hudoyo
Keyword(s):  
Formic Acid ◽  
Electrochemical Reduction ◽  
Reduction Of Co2
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