SEPARATION OF ALCOHOL/WATER GASEOUS MIXTURES BY THIN CERAMIC MEMBRANE

Abstract

A thin porous ceramic membrane made by a method quite similar to that proposed previously²⁾ was used for gasphase separation of alcohol/water gaseous mixtures (methanol/water, ethanol/water and isopropanol/water systems) at their normal boiling points.
The results show that this kind of ceramic membrane is quite efficient for bypassing the azeotropic point in alcohol/water separation and also for further enrichment of alcohols. The separation factor observed for these systems was larger than 5.