Chapter eleven - Hybrid membranes, liquid/solid, for the enhancement of membrane gas selectivity. The example of ionic liquid membrane

Abstract

Membrane-separation technology is commonly utilized as an alternative method to traditional gas-separation processes. Ionic liquids can improve the efficiency of membranes for gas separation since these liquids possess negligible vapor pressure, thermal stability, and wide electrochemical stability. The combination of ionic liquids and membranes leads to produce some applicable membranes such as supported ionic liquid membranes (SILMs), poly ionic liquid membranes (PILMs), and ionic liquid mixed-matrix membranes (ILMMMs) for gas-separation processes. This chapter provides a description of ionic liquid hybrid membranes and explains some most common categories of these membranes, as well as their advantages and disadvantages. Moreover, some hybrid membranes for CO2 separation are introduced at the end of the chapter.