Nuevos procesos de separación basados en Nuevos procesos de separación basados en membranas líquidas iónicas membranas líquidas iónicas soportadas sop

Abstract

Supported liquid membranes have been

recognized as an effective method for selective

separation of compounds in a variety of

processes.

However, industrial application is still limited,

mainly due to their limited operational stability.

The use of ionic liquids as liquid phase in this

type of membrane has made it possible to obtain

more stable supported liquid membranes due

to the almost negligible vapor pressure of these

new solvents, its high viscosity and the ability

to minimize its solubility in surrounding phases

by proper selection of the cation and anion

constituting the ionic liquid. In addition, the

ability to modulate the properties of ionic liquids

by varying the cation and anion constituent

of the same enables the design of supported

liquid membranes more suitable for every

application, which has opened up a whole range

of potential applications. This article presents a

review of current status of this new membrane

technology, with particular emphasis on methods

of preparation, the operational stability of the

same and some of the most representative of

this technology such as the separation of organic

compounds and mixtures of gases.