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Conversión electrocatalítica de CO2 en oxalato por un complejo de cobre.

Raja Angamuthu¹, Philip Byers, Martin Lutz

¹Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Post Office Box 9502, 2300 RA Leiden, Netherlands.

Science (New York, N.Y.)

|January 16, 2010

Resumen

Los investigadores desarrollaron un nuevo catalizador complejo de cobre que convierte el dióxido de carbono (CO2) en oxalato valioso. Este proceso innovador ofrece un método sostenible para la utilización de CO2 y la reducción de CO2 atmosférico.

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Área de la Ciencia:

Química Inorgánica La Química Inorgánica es la química inorgánica.
La catálisis es la catálisis.
Química Sostenible y Sustentable.

Sus antecedentes:

Las crecientes preocupaciones por el calentamiento global impulsan la investigación sobre la utilización del dióxido de carbono (CO2).
El CO2 es una materia prima potencial para la síntesis de productos químicos de valor agregado.
El desarrollo de sistemas catalíticos eficientes para la conversión de CO2 es crucial.

Objetivo del estudio:

Para describir un nuevo complejo dinuclear de cobre para la oxidación de CO2.
Para investigar la conversión catalítica de CO2 en oxalato utilizando este complejo de cobre.
Para demostrar la capacidad de regeneración y rotación del sistema catalítico.

Principales métodos:

Síntesis y caracterización de un complejo dinuclear de cobre.
Oxidación del complejo de cobre (I) por CO2 para formar un complejo de cobre (II) oxalato.
Precipitación de oxalato de litio desde el complejo de oxalato de cobre.
Reducción electroquímica del complejo de cobre para regenerar el catalizador de cobre.

Principales resultados:

Se sintetizó un complejo dinuclear de cobre (I), que es oxidado por CO2 a un complejo tetranuclear de cobre (II).
El complejo de cobre facilitó la precipitación cuantitativa de oxalato de litio.
La reducción electroquímica regeneró el catalizador dinuclear activo de cobre con alta eficiencia.
El sistema catalítico logró seis revoluciones, produciendo 12 equivalentes de oxalato durante 7 horas a -0.03 V frente a NHE.

Conclusiones:

Un nuevo sistema catalítico basado en un complejo dinuclear de cobre convierte efectivamente el CO2 en oxalato.
El proceso demuestra la utilización eficiente de CO2 y la regeneración del catalizador a través de la electroquímica.
Este trabajo presenta un camino prometedor para la síntesis química sostenible utilizando CO2 como materia prima.