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Síntesis de un catalizador heterogéneo de MOF eficiente (UiO-66-NH₂-Pd) para las reacciones de acoplamiento cruzado

Abdulrahman A Almehizia¹, Anjan Kumar², Yashwantsinh Jadeja³

¹Drug Exploration and Development Chair (DEDC), Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, 11451, Riyadh, Saudi Arabia. abdulrahmanaalmehizia53@gmail.com.

Scientific reports

|August 21, 2025

Resumen

Los investigadores desarrollaron un método eficiente para encapsular nanopartículas de paladio en marcos orgánicos metálicos UiO-66. Este nuevo catalizador muestra una alta actividad y reciclabilidad para las reacciones de acoplamiento cruzado de CO, ofreciendo una solución catalítica ecológica.

Área de la Ciencia:

Ciencias de los materiales
Catálisis
Nanotecnología

Sus antecedentes:

Las estructuras orgánicas metálicas (MOF) como el UiO-66 son soportes prometedores para los catalizadores.
La síntesis eficiente de las nanopartículas metálicas soportadas es crucial para la catálisis.
Los catalizadores a base de paladio son vitales para las reacciones de acoplamiento cruzado.

Objetivo del estudio:

Desarrollar un método fácil para encapsular nanopartículas de paladio dentro de UiO-66.
Investigar el rendimiento catalítico del material UiO-66-NH2-Pd resultante.
Evaluar la reciclabilidad y la estabilidad del catalizador a base de paladio.

Principales métodos:

Síntesis asistida por microondas para activar los poros de UiO-66 y reducir los precursores metálicos.
Caracterización mediante EDX, SEM, XRD, TGA, BET y ICP-OES.
Prueba de la actividad catalítica en reacciones de acoplamiento cruzado C-O.

Principales resultados:

Encapsulación exitosa de las nanopartículas de paladio dentro de UiO-66.
UiO-66-NH2-Pd exhibió una alta eficiencia catalítica bajo condiciones suaves.
El catalizador fue reciclado cinco veces con una lixiviación mínima de paladio y pérdida de actividad.

Conclusiones:

Se estableció un método sencillo y respetuoso con el medio ambiente para la preparación de nanopartículas de paladio con UiO-66.
El UiO-66-NH2-Pd sintetizado demuestra un excelente rendimiento catalítico y reciclabilidad para el acoplamiento cruzado de CO.
Este material nanoestructurado presenta una alternativa sostenible para las aplicaciones catalíticas.

Palabras clave:

Acoplamiento Ácido dicarboxílico El MOF En el caso de los compuestos orgánicos:

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