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Separación selectiva del fenantreno de las mezclas de isómeros aromáticos mediante un macrociclo a base de azobenzeno

Yuezhou Liu¹, Hongliang Wang², Liqing Shangguan¹

¹State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.

Journal of the American Chemical Society

|February 16, 2021

Resumen

Los investigadores desarrollaron un nuevo macrociclo sensible a la luz para separar de manera eficiente el fenantreno (PHE) de las mezclas. Este método ofrece un enfoque reutilizable y limpio para la purificación de PHE en aplicaciones industriales.

Área de la Ciencia:

Química supramolecular
Ciencia de la separación
Síntesis orgánica

Sus antecedentes:

La separación selectiva del fenantreno (PHE) de las mezclas de isómeros aromáticos plantea importantes desafíos industriales.
El desarrollo de técnicas de separación eficientes y respetuosas con el medio ambiente es crucial para el procesamiento químico.

Objetivo del estudio:

Sintetizar un nuevo macrociclo basado en azobenzeno soluble en agua y sensible a la luz para la separación selectiva de PHE.
Evaluar la eficacia del macrociclo sintetizado para separar el PHE del antraceno mediante un método de extracción sólido-líquido.

Principales métodos:

Síntesis de un macrociclo basado en azobenzeno sensible a la luz (compuesto 1).
Aplicación de una solución acuosa del macrociclo en un proceso de extracción sólido-líquido.
Reciclaje y evaluación del rendimiento del macrociclo en múltiples ciclos de separación.

Principales resultados:

Se obtiene una pureza media PHE de aproximadamente el 91,1% después de cinco ciclos de extracción.
Se ha demostrado la reutilización del macrociclo 1 durante al menos cinco ciclos sin pérdida significativa de rendimiento de separación.
Separó con éxito el PHE del antraceno en condiciones ambientales.

Conclusiones:

El macrociclo sensible a la luz desarrollado proporciona un método nuevo y limpio para la separación de PHE.
Los principios de la química huésped-huésped se aplican efectivamente para la separación selectiva de los isómeros aromáticos.
El macrociclo muestra potencial para aplicaciones industriales en procesos de purificación.

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