Properties of new inorganic membranes prepared by metal alkoxide methods. Part III: New inorganic lithium permselective ion exchange membrane

Abstract Inorganic lithium permselective ion exchange membranes were prepared on a microporous alumina substrate by dip-coating solution containing Si(OC 2 H 5 ) 4 , LiOC 2 H 5 , Mn(OC 2 H 5 ) 2 and C 2 H 5 OH. The membranes showed ion-selectivity for cation over anion and permselectivity for Li + over Na + . The static transport number for cation [K + ] is 0.75 and the permselectivity for Na + over Li + is 0.29, comparing 2.57 for ordinary organic ion exchange membrane.