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Síntesis del p-xileno a partir del etileno

Thomas W Lyons¹, Damien Guironnet, Michael Findlater

¹Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States.

Journal of the American Chemical Society

|September 1, 2012

Resumen

Un nuevo método sintetiza paraxileno utilizando únicamente etileno como materia prima. Este proceso sostenible evita el petróleo y produce paraxileno puro sin isómeros no deseados.

Área de la Ciencia:

La síntesis química es la síntesis química.
Química sostenible y sustentable.
Alternativas al petróleo Alternativas al petróleo

Sus antecedentes:

Creciente necesidad de productos químicos intermedios alternativos debido a la disminución de los suministros de petróleo.
El para-xileno es un producto químico de alto volumen típicamente derivado del petróleo.
El etileno es una materia prima alternativa viable a partir de la biomasa renovable o el gas de esquisto.

Objetivo del estudio:

Desarrollar una nueva ruta de síntesis para el paraxileno utilizando únicamente etileno.
Para lograr la producción selectiva de para-xileno, libre de ortho y meta isómeros.

Principales métodos:

Trimerización del etileno para formar hexeno.
Conversión del hexeno en 2,4-hexadieno.
Reacción de Diels-Alder de 2,4-hexadieno con etileno para obtener 3,6-dimetilciclohexeno.
Deshidrogenación del 3,6-dimetilciclohexeno a para-xileno.

Principales resultados:

Síntesis exitosa de paraxileno a partir del etileno.
El proceso produce para-xileno no contaminado por ortho o meta isómeros.
Demuestra una ruta selectiva y eficiente a un intermediario químico clave.

Conclusiones:

El etileno puede servir como única materia prima para la síntesis selectiva de para-xileno.
Este método ofrece una alternativa sostenible a la producción basada en el petróleo.
La vía desarrollada proporciona una ruta al paraxileno puro, crucial para varias industrias.

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