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Minimización de la pérdida de H₂O₂ en electrosíntesis industrial mediante catalizadores asimétricos de Sn de grupo

Peng Xu¹, Hao-Tong Li¹, Chao-Hai Gu¹

¹State Key Laboratory of Advanced Environmental Technology, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China.

Angewandte Chemie (International ed. in English)

|January 21, 2026

Resumen

Este estudio presenta un nuevo catalizador para la electrosíntesis sostenible de peróxido de hidrógeno (H2O2). El novedoso catalizador de estaño de grupo principal aumenta significativamente la eficiencia y la estabilidad de la producción de H2O2, superando las limitaciones anteriores.

Área de la Ciencia:

Electroquímica
Ciencia de Materiales
Catálisis

Sus antecedentes:

La electrosíntesis de peróxido de hidrógeno (H2O2) es un método de producción sostenible.
Los métodos actuales sufren bajos rendimientos debido a la pobre selectividad y la descomposición de H2O2.
El desarrollo de catalizadores eficientes es crucial para la aplicabilidad industrial.

Objetivo del estudio:

Diseñar y demostrar un novedoso catalizador de grupo principal para mejorar la electrosíntesis de H2O2.
Mejorar la selectividad para la reacción de reducción de oxígeno de dos electrones (2e- ORR).
Suprimir la descomposición de H2O2 durante el proceso de electrosíntesis.

Principales métodos:

Se utilizaron sitios de estaño (Sn) de grupo principal coordinados asimétricamente con N/S como catalizador activo.
Se emplearon caracterizaciones in situ y simulaciones teóricas para comprender los mecanismos catalíticos.
Se realizaron experimentos a densidades de corriente industrialmente relevantes y se amplió a un reactor piloto.

Principales resultados:

Se logró una eficiencia de Faraday del 93% para H2O2 a 300 mA cm-2.
Se demostró una tasa de producción de 353,5 mmol h-1 a 20 A en un reactor piloto de 100 cm2.
Los sitios de Sn mostraron inercia hacia la activación de H2O2, minimizando la descomposición.

Conclusiones:

La co-coordinación asimétrica N/S estabiliza los intermedios y facilita la generación de H2O2.
El catalizador de Sn de grupo principal diseñado ofrece una estrategia prometedora para la electrosíntesis eficiente y estable de H2O2.
El diseño racional del catalizador con coordinación controlada y estructuras electrónicas es clave para minimizar la pérdida de H2O2.

Palabras clave:

coordinación asimétrica descomposición de H2O2 electrosíntesis de H2O2 corriente a nivel industrial catalizadores de grupo principal

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