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Estrategia de vértice en MOFs 2D en capas: mejora simultánea de la termodinámica y la cinética para el rendimiento de

Xiaoqian Zhu¹, Tian Ke¹, Jingyi Zhou¹

¹Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 310027 Hangzhou, Zhejiang, China.

Journal of the American Chemical Society

|April 13, 2023

Resumen

Los investigadores desarrollaron adsorbentes avanzados utilizando una estrategia de vértices en marcos orgánicos metálicos (MOF) para la separación eficiente de acetileno (C2H2) / dióxido de carbono (CO2). Este avance permite la producción de acetileno de alta pureza para aplicaciones industriales.

Área de la Ciencia:

Ciencias de los materiales
Ingeniería Química
Nanotecnología

Sus antecedentes:

La separación de acetileno (C2H2) y dióxido de carbono (CO2) es fundamental para la producción de C2H2 de alta pureza para polímeros avanzados y electrónica.
El desarrollo de adsorbentes con alta capacidad, selectividad, transferencia de masa y estabilidad para la separación de C2H2/CO2 sigue siendo un desafío importante.

Objetivo del estudio:

Diseñar y sintetizar nuevos adsorbentes con mejor rendimiento para la separación de C2H2/CO2.
Investigar el efecto del diseño del marco sobre la termodinámica y la cinética de la adsorción.

Principales métodos:

Se empleó una estrategia de vértices para diseñar marcos metálico-orgánicos (MOF) de forma ondulada y en capas.
Se sintetizaron dos nuevos MOFs hidrolíticamente estables, el ZUL-330 y el ZUL-430.
Se realizaron experimentos de equilibrio de adsorción y difusión, junto con modelos computacionales.

Principales resultados:

Los MOF diseñados demostraron selectividades de separación de registros para las mezclas de C2H2/CO2.
Se lograron capacidades dinámicas extraordinarias de C2H2 y una rápida transferencia de masa.
Se obtuvieron altas productividades de C2H2 de grado polímero (99,9%) y de grado electrónico (99,99%).

Conclusiones:

La estrategia de vértices optimiza efectivamente el rendimiento del adsorbente para la separación de C2H2/CO2.
Los nuevos MOF ofrecen una solución prometedora para la producción de acetileno de alta pureza.
Este enfoque hace avanzar los materiales para las separaciones de gases industriales críticos.

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