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Gas-liquid-solid reaction system for CO2 electroreduction to formate without using supporting electrolyte

Abstract: The use of bismuth-based catalysts is promising for formate production by the electroreduction of CO2 captured from waste streams. However, compared to the extensive research on catalysts, only a few studies have focused on electrochemical reactor performance. Hence, this work studied a continuous-mode gas-liquid-solid reaction system for investigating CO2 electroreduction to formate using Bi-catalyst-coated membrane electrodes as cathodes. The experimental setup was designed to analyze products obtained in both liquid and gas phases. The influence of relevant variables (e.g., temperature and input water flow) was analyzed, with the thickness of the liquid film formed over the cathode surface being a key parameter affecting system performance. Promising results, including a high formate concentration of 34 g/L with faradaic efficiency for formate of 72%, were achieved.

 Autoría: Díaz-Sainz G., Alvarez-Guerra M., Solla-Gullón J., García-Cruz L., Montiel V., Irabien A.,

 Fuente: AIChE Journal, 2020, 66(9), e16299

Editorial: American Institute of Chemical Engineers

 Fecha de publicación: 01/09/2020

Nº de páginas: 46

Tipo de publicación: Artículo de Revista

DOI: 10.1002/aic.16299

ISSN: 0001-1541,1547-5905

Proyecto español: CTQ2016-76231-C2-1-R ; CTQ2016-76231-C2-2-R

Url de la publicación: https://doi.org/10.1002/aic.16299

Autores/as

JOSE SOLLA GULLON

GARCÍA CRUZ, LETICIA

VICENTE MONTIEL LEGUEY