Korelace syntéza-vlastnost-funkce v nových zeolitech navržených strategií ADOR

Abdi, Sarra

Zeolites represent an important class of heterogeneous catalysts. They possess distinctive textural properties and adjustable acidity, allowing them to effectively catalyze a wide variety of chemical reactions. Utilization of germanium in the synthesis of zeolites opened up a notable expansion of their structural diversity. Ge introduction into zeolites has led to the successful preparation of numerous unique structures characterized by large and extra-large pores. Moreover, taking advantage of the hydrolytic instability of the Ge-O bonds, germanosilicates have been employed for: i) the top-down synthesis of novel zeolite structures through the innovative ADOR (Assembly-Disassembly-Organization-Reassembly) synthetic approach, ii) the isomorphous substitution of germanium with elements such as aluminum (Al), gallium (Ga), titanium (Ti), and tin (Sn) to generate diverse acid functionalities within the zeolite framework. In theory, the ADOR synthetic approach can be employed for a wide range of zeolites, encompassing both structural and chemical diversity. However, in practice, this synthetic strategy has been successfully implemented only for several germanosilicates as well as titano- or alumino- germanosilicate UTL zeolite. This limitation has restricted the catalytic potential of ADORable zeolites...

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