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Perspectivas sobre los efectos interfaciales en los nanocatalizadores metálicos heterogéneos hacia la hidrogenación

Kunlong Liu¹, Ruixuan Qin¹, Nanfeng Zheng^1,2

¹State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.

Journal of the American Chemical Society

|March 16, 2021

Resumen

La comprensión de los catalizadores metálicos heterogéneos es clave para el desarrollo de catalizadores industriales selectivos. Esta perspectiva detalla los efectos interfaciales en los nanocatalizadores metálicos de hidrogenación para una mejor comprensión de la selectividad y el mecanismo.

Área de la Ciencia:

Catálisis
Ciencias de los materiales
Química de las superficies

Sus antecedentes:

Los catalizadores metálicos heterogéneos presentan una complejidad estructural que dificulta la comprensión mecánica y el desarrollo selectivo de productos.
La "naturaleza camaleónica" de estos catalizadores complica el análisis a nivel molecular de las vías catalíticas.

Objetivo del estudio:

Resumir los avances recientes en la comprensión de los efectos interfaciales en los nanocatalizadores metálicos de hidrogenación heterogéneos.
Orientar el diseño de catalizadores prácticos con mecanismos claros y alta selectividad.

Principales métodos:

Revisión de las investigaciones recientes sobre los efectos interfaciales en los nanocatalizadores metálicos de hidrogenación heterogéneos.
Análisis de conocimientos moleculares sobre las funciones del metal catalítico, el soporte y los modificadores de ligandos.

Principales resultados:

Las interfaces influyen críticamente en la activación de H2, la interacción del sustrato y la transferencia de hidrógeno.
Los nanocatalizadores de aleación se benefician de los efectos electrónicos y geométricos del conjunto y del derrame de hidrógeno.
Las interfaces de soporte metálico incluyen ligandos y especies catiónicas, mientras que los modificadores orgánicos inducen efectos estéricos y electrónicos.

Conclusiones:

El descifrado de los efectos interfaciales es crucial para el diseño de catalizadores de hidrogenación altamente selectivos.
El desarrollo futuro apunta a catalizadores metálicos de hidrogenación heterogéneos similares a las enzimas con un rendimiento predecible.

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