Analysis of carbon dioxide-to-methanol direct electrochemical conversion mediated by an ionic liquid

Carlos Carlesi, Danilo Carvajal, Dreidy Vasquez, Rodrigo Schrebler Arratia

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

11 Citas (Scopus)

Resumen

An intensified process for carbon dioxide capture and conversion is proposed and analyzed, considering an electrochemical parallel plate reactor which processes a CO2-charged stream from an absorption unit at 40°C and atmospheric pressure and where the target product of the conversion is methanol. The task-specific ionic liquid 1-(3-aminopropyl)-3-methylimidazolium bromide was selected, synthesized and characterized. This ionic liquid has shown a good absorption capacity, high ionic conductivity, high chemical-electrochemical stability and acts as a charged intermediate (CO2*-) stabilizer, enabling the electrochemical reduction of absorbed CO2.The electrical energy in the electrochemical reactor was estimated to be 8.683kWhkg (CO2)-1 or 115.16g (CO2) kWh-1, too high to ensure the environmental sustainability of the process. A low concentration of carbon dioxide in the liquid phase, at ambient conditions, implies the need for a high electrode area for the process and is a major hindrance to improving the economy of the process.

Idioma originalInglés
Páginas (desde-hasta)48-56
Número de páginas9
PublicaciónChemical Engineering and Processing: Process Intensification
Volumen85
DOI
EstadoPublicada - nov. 2014
Publicado de forma externa

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