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La destilación y la volatilidad de líquidos iónicos

Martyn J Earle¹, José M S S Esperança, Manuela A Gilea

¹The QUILL Centre, The Queen's University of Belfast, Stranmillis Road, Belfast BT9 5AG, UK.

|February 17, 2006

Resumen

Los líquidos iónicos, o sales fundidas a baja temperatura, no son no volátiles. Muchos líquidos iónicos se pueden destilar a baja presión sin descomposición, abriendo nuevas aplicaciones.

Área de la Ciencia:

Química Química es la química.
Ciencia de los materiales Ciencia de los materiales.

Sus antecedentes:

Los líquidos iónicos están compuestos únicamente de iones y son ampliamente percibidos como no volátiles.
Esta involatilidad presunta sustenta muchas aplicaciones, pero limita los usos de purificación y fase gaseosa.

Objetivo del estudio:

Desafiar la noción de que los líquidos iónicos no pueden destilarse.
Demostrar la destilabilidad de líquidos iónicos aproticos comunes para mejorar la pureza y nuevas aplicaciones.

Principales métodos:

Destilación de líquidos iónicos apróticos seleccionados a baja presión.
Análisis de la pureza y descomposición de la sustancia recuperada.

Principales resultados:

Demostró que muchos líquidos iónicos pueden destilarse a 200-300°C y baja presión sin descomposición.
Se logró una recuperación significativa de la sustancia líquida iónica pura.

Conclusiones:

La suposición de la involatilidad del líquido iónico es infundada.
La destilación permite la recuperación de alta pureza y amplía las aplicaciones potenciales de líquidos iónicos en varios procesos.

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