Physchem.cz

Due to molecular sieving effect, high adsorption capacity and adjustable chemical composition zeolites are efficient adsorbents and catalysts for a number of processes. However, there is still a lack of synthesis tools for generation of zeolite frameworks with predetermined topology. Controllable zeolite synthesis is a matter of interest for both fundamental and applied chemistry. As one of the most efficient technique, ADOR method uses the chemical weakness of existing anisotropic frameworks for the synthesis of new zeolites with regulated structures. However, the potential of classical ADOR strategy for the generation of new materials is limited due to specific requirements to anisotropy of a parent framework (presence of labile connecting units between stable layers) and its composition (presence of balanced fraction of functional heteroatoms evenly distributed in these connecting units). This project focuses on the yet unexplored germanosilicate zeolites having potential to act as the precursors for new frameworks. The set of appropriate parent materials include both well-known zeolites possessing unidimensional distribution of interlayer connecting units and those with the structures composed of stable "wires" or "isolated islands" connected via labile units.