Zeolite beta spheres

Zeolite beta was crystallized from clear homogeneous solutions within the p ores of anion exchange resin beads. The organic macrotemplate was then remo ved by combustion leaving stable macrospheres of zeolite beta. The zeolite beta crystallization within the resin beads was investigated by X-ray diffr action, Raman spectroscopy, SEM and nitrogen adsorption measurements. Cryst allization within the macrotemplates was compared with the crystallization from bulk solution. The influence of the resin beads on the crystallization process was investigated by increasing the amount of ion exchanger present during synthesis and also by preparing bulk samples in the absence of macr otemplates. (C) 2001 Elsevier Science B.V. All rights reserved.