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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
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N-metilación reductora electroquímica con CO2 habilitada por un catalizador molecular
Conor L Rooney1,2, Yueshen Wu1,2, Zixu Tao1,2
1Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.
Journal of the American Chemical Society
|November 16, 2021
Resumen
Este estudio introduce la primera N-metilación reductora electroquímica utilizando dióxido de carbono (CO2) como fuente sostenible de un solo carbono. El nuevo método convierte eficientemente las aminas y los nitrocompuestos en N-metilaminas, avanzando la química verde.
Área de la Ciencia:
- Química ecológica
- La electrocatálisis
- Síntesis orgánica
Sus antecedentes:
- La industria química sostenible requiere una metilación benigna utilizando dióxido de carbono (CO2).
- La reducción electroquímica de CO2 se estudia, pero la metilación reductora no se ha explorado en la electrocatálisis.
Objetivo del estudio:
- Informe de la primera reacción de N-metilación reductora electroquímica con CO2.
- Demostrar la compatibilidad con diversos compuestos nitrogenados y desarrollar un proceso en cascada para los nitrocompuestos.
Principales métodos:
- Utilizó catalizador de ftaalocianina de cobalto en nanotubos de carbono para la N-metilación.
- Mecanismo de reacción investigado que involucra un intermediario de carbono electrófilo (formaldehído) y reactivos nucleófilos.
- Desarrolló un proceso de reducción en cascada para la reducción simultánea de CO2 y nitrocompuestos.
Principales resultados:
- Se ha logrado con éxito la N-metilación reductora electroquímica de aminas, hidroxilaminas e hidrazina con CO2.
- Se identificó la nucleofilicidad de aminas como un factor clave para la eficacia del acoplamiento C-N.
- Desarrolló un proceso en cascada que produce N-metilaminas a partir de nitrocompuestos con alta selectividad de monometilación.
Conclusiones:
- Estableció la primera N-metilación reductora electrocatalítica utilizando CO2.
- Se ha demostrado un método versátil y sostenible para sintetizar N-metilaminas a partir de diversas materias primas nitrogenadas, incluidos los nitrocompuestos.
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