Liquid-phase adsorption of monosaccharide–water mixtures on X and Y zeolites

Abstract

A systematic study has been performed on the adsorption of D-fructose–, D-glucose– and D(–)-arabinose–water mixtures on K⁺, Sr²⁺, Ca²⁺, Ba²⁺ and La³⁺ ion-exchanged X and Y zeolites. From the adsorption excess isotherms the separation factors K and the equilibrium diagrams x^s₂vs.x¹₂ of the binary mixtures were calculated. The possible triangles of O atoms of monosaccharides, their interactions with cations, the influence of crystallographic cation positions and the Si : Al ratio of zeolites on formation of adsorption complexes were analysed.